Structure based on 1k4g

Ideal structure
Name: 2,6-diamino-8-(1h-imidazol-2-ylsulfanylmethyl)-3h-quinazoline-4-one
Formula: C12 H12 N6 O S
Weight: 288.328
SMILES: "NC1=Nc2c(CSc3[nH]ccn3)cc(N)cc2C(=O)N1"
Spacial conformation based on PDB 1k4g.
Also present on 1q63
RESIDUE   AIQ     32
CONECT      C1     3 C2   C6   H11 
CONECT      C2     3 C1   C9   C3  
CONECT      C9     4 C2   S1   H91  H92 
CONECT      C3     3 C2   N3   C4  
CONECT      N3     2 C3   C8  
CONECT      C8     3 N3   N2   N1  
CONECT      N2     3 C8   HN21 HN22
CONECT      N1     3 C8   C7   HN11
CONECT      C7     3 N1   O1   C4  
CONECT      O1     1 C7  
CONECT      C4     3 C3   C7   C5  
CONECT      C5     3 C4   C6   H51 
CONECT      C6     3 C1   C5   N4  
CONECT      N4     3 C6   HN41 HN42
CONECT      S1     2 C9   C10 
CONECT      C10    3 S1   N5   N6  
CONECT      N5     2 C10  C11 
CONECT      N6     3 C10  C12  HN61
CONECT      C11    3 N5   C12  H111
CONECT      C12    3 N6   C11  H121
CONECT      H11    1 C1  
CONECT      H91    1 C9  
CONECT      H92    1 C9  
CONECT      HN21   1 N2  
CONECT      HN22   1 N2  
CONECT      HN11   1 N1  
CONECT      H51    1 C5  
CONECT      HN41   1 N4  
CONECT      HN42   1 N4  
CONECT      HN61   1 N6  
CONECT      H111   1 C11 
CONECT      H121   1 C12 
END   
HET    AIQ             32
HETNAM     AIQ 2,6-DIAMINO-8-(1H-IMIDAZOL-2-YLSULFANYLMETHYL)-3H-QUINA
HETNAM   2 AIQ ZOLINE-4-ONE
FORMUL      AIQ    C12 H12 N6 O1 S1

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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