['CC(C)N', 'C[C@H](C(=O)NC=O)N(C)Cc1ccccc1', 'CC(C)NC=O', 'C[C@H](C(N)=O)N(C)Cc1ccccc1', 'CC(C)NC(N)=O', 'C[C@H](C=O)N(C)Cc1ccccc1', 'CCC', 'C[C@H](C(=O)NC(N)=O)N(C)Cc1ccccc1', 'CNCc1ccccc1', 'CCC(=O)NC(=O)NC(C)C', 'Cc1ccccc1', 'CN[C@H](C)C(=O)NC(=O)NC(C)C', 'c1ccccc1', 'CC(C)NC(=O)NC(=O)[C@@H](C)N(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.