['CC(C)CCCN', 'CN(C=O)Cc1cnn(-c2ccccc2)c1', 'CC(C)CCCNC=O', 'CNCc1cnn(-c2ccccc2)c1', 'CCCC(C)C', 'CN(Cc1cnn(-c2ccccc2)c1)C(N)=O', 'CNC(=O)NCCCC(C)C', 'Cc1cnn(-c2ccccc2)c1', 'c1ccc(-n2cccn2)cc1', 'CC(C)CCCNC(=O)N(C)C', 'c1ccccc1', 'CC(C)CCCNC(=O)N(C)Cc1cn[nH]c1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(-n2cccn2)cc1.