['CCNCC', 'Cc1ccc(CN(CC=O)C(C)C)s1', 'CC', 'CCNC(=O)CN(Cc1ccc(C)s1)C(C)C', 'CCN(CC)C(C)=O', 'Cc1ccc(CNC(C)C)s1', 'Cc1ccc(C)s1', 'CCN(CC)C(=O)CNC(C)C', 'CCC', 'CCN(CC)C(=O)CNCc1ccc(C)s1', 'Cc1cccs1', 'CCN(CC)C(=O)CN(C)C(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccsc1.