Structure based on 1udu

Ideal structure
Name: 6-benzo[1,3]dioxol-5-yl-2-methyl-2,3,6,7,12,12a-hexahydro-pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
Formula: C22 H19 N3 O4
Weight: 389.404
SMILES: "CN1CC(=O)N2[CH](Cc3c([nH]c4ccccc34)[CH]2c5ccc6OCOc6c5)C1=O"
Spacial conformation based on PDB 1udu.
Also present on 1xoz
RESIDUE   CIA     48
CONECT      C3     3 C2   C4   H3  
CONECT      C2     3 C3   C1   H2  
CONECT      C1     3 C2   C6   H1  
CONECT      C6     3 C1   C7   C5  
CONECT      C7     3 C6   C8   C10 
CONECT      C8     3 C7   N9   C13 
CONECT      N9     3 C8   C5   HN9 
CONECT      C5     3 C6   N9   C4  
CONECT      C4     3 C3   C5   H4  
CONECT      C13    4 C8   N12  C22  H13 
CONECT      N12    3 C13  C17  C11 
CONECT      C17    3 N12  O20  C16 
CONECT      O20    1 C17 
CONECT      C16    4 C17  N15  H161 H162
CONECT      N15    3 C16  C31  C18 
CONECT      C31    3 N15  O32  C11 
CONECT      O32    1 C31 
CONECT      C11    4 N12  C31  C10  H11 
CONECT      C10    4 C7   C11  H101 H102
CONECT      C18    4 N15  H181 H182 H183
CONECT      C22    3 C13  C27  C23 
CONECT      C27    3 C22  C26  H27 
CONECT      C26    3 C27  C25  H26 
CONECT      C25    3 C26  O30  C24 
CONECT      O30    2 C25  C29 
CONECT      C29    4 O30  O28  H291 H292
CONECT      O28    2 C29  C24 
CONECT      C24    3 C25  O28  C23 
CONECT      C23    3 C22  C24  H23 
CONECT      H3     1 C3  
CONECT      H2     1 C2  
CONECT      H1     1 C1  
CONECT      HN9    1 N9  
CONECT      H4     1 C4  
CONECT      H13    1 C13 
CONECT      H161   1 C16 
CONECT      H162   1 C16 
CONECT      H11    1 C11 
CONECT      H101   1 C10 
CONECT      H102   1 C10 
CONECT      H181   1 C18 
CONECT      H182   1 C18 
CONECT      H183   1 C18 
CONECT      H27    1 C27 
CONECT      H26    1 C26 
CONECT      H291   1 C29 
CONECT      H292   1 C29 
CONECT      H23    1 C23 
END   
HET    CIA             48
HETSYN     CIA TADALAFIL; CIALIS
HETNAM     CIA 6-BENZO[1,3]DIOXOL-5-YL-2-METHYL-2,3,6,7,12,12A-HEXAHYD
HETNAM   2 CIA RO-PYRAZINO[1',2':1,6]PYRIDO[3,4-B]INDOLE-1,4-DIONE
FORMUL      CIA    C22 H19 N3 O4

This OCA MONOMER page
uses Jmol, developed by the Jmol Development Team (color reference)
OCA© by Jaime Prilusky, 1996-2004,2006,2010,2014
Bioinformatics Unit
Weizmann Institute of Science