['CC(C)CCCN', 'CN(C)S(=O)(=O)c1ccccc1CNC=O', 'CC(C)CCCNC=O', 'CN(C)S(=O)(=O)c1ccccc1CN', 'CCCC(C)C', 'CN(C)S(=O)(=O)c1ccccc1CNC(N)=O', 'CC(C)CCCNC(N)=O', 'Cc1ccccc1S(=O)(=O)N(C)C', 'CNC', 'CC(C)CCCNC(=O)NCc1ccccc1[SH](=O)=O', 'CNC(=O)NCCCC(C)C', 'CN(C)S(=O)(=O)c1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.