['CO', 'Cc1ccc(Cn2nc(C)c(/C=C/C(=O)NCCCC=O)c2C)cc1', 'COC(=O)CCCN', 'Cc1ccc(Cn2nc(C)c(/C=C/C=O)c2C)cc1', 'CCCC(=O)OC', 'Cc1ccc(Cn2nc(C)c(/C=C/C(N)=O)c2C)cc1', 'COC(=O)CCCNC(C)=O', 'Cc1ccc(Cn2nc(C)c(C)c2C)cc1', 'Cc1ccc(C)cc1', 'COC(=O)CCCNC(=O)/C=C/c1c(C)n[nH]c1C', 'Cc1ccccc1', 'COC(=O)CCCNC(=O)/C=C/c1c(C)nn(C)c1C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(Cn2cccn2)cc1.