['CC(C)CCCN', 'CN(C=O)Cc1ccc(N(C)C)cc1', 'CC(C)CCCNC=O', 'CNCc1ccc(N(C)C)cc1', 'CCCC(C)C', 'CN(Cc1ccc(N(C)C)cc1)C(N)=O', 'Cc1ccc(N(C)C)cc1', 'CNC(=O)NCCCC(C)C', 'CNC', 'CC(C)CCCNC(=O)N(C)Cc1ccccc1', 'CN(C)c1ccccc1', 'CC(C)CCCNC(=O)N(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.