Structure based on ?

Ideal structure
Name: 4-[3-(3-nitrophenyl)-1,2,4-oxadiazol-5-yl]butanoic acid
Formula: C12 H11 N3 O5
Weight: 277.233
SMILES: "OC(=O)CCCc1onc(n1)c2cccc(c2)[N+]([O-])=O"
Spacial conformation based on PDB ?.
Also present on 2ikg
RESIDUE   BTO     31
CONECT      C1     3 C2   C6   H1  
CONECT      C2     3 C1   C3   H2  
CONECT      C3     3 C2   C4   N   
CONECT      C4     3 C3   C5   H4  
CONECT      C5     3 C4   C6   C7  
CONECT      C6     3 C1   C5   H6  
CONECT      N      3 C3   O    O1  
CONECT      O      1 N   
CONECT      O1     1 N   
CONECT      C7     3 C5   N1   N2  
CONECT      N1     2 C7   C8  
CONECT      C8     3 N1   C9   O15 
CONECT      C9     4 C8   C10  H91  H92 
CONECT      C10    4 C9   C11  H101 H102
CONECT      C11    4 C10  C12  H111 H112
CONECT      C12    3 C11  O13  O14 
CONECT      O13    1 C12 
CONECT      O14    2 C12  H14 
CONECT      O15    2 C8   N2  
CONECT      N2     2 C7   O15 
CONECT      H14    1 O14 
CONECT      H111   1 C11 
CONECT      H112   1 C11 
CONECT      H101   1 C10 
CONECT      H102   1 C10 
CONECT      H91    1 C9  
CONECT      H92    1 C9  
CONECT      H6     1 C6  
CONECT      H1     1 C1  
CONECT      H2     1 C2  
CONECT      H4     1 C4  
END   
HET    BTO             31
HETNAM     BTO 4-[3-(3-NITROPHENYL)-1,2,4-OXADIAZOL-5-YL]BUTANOIC ACID
FORMUL      BTO    C12 H11 N3 O5

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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