['CC(C=O)NS(C)(=O)=O', 'CCc1nc2cc(N)ccc2o1', 'CS(N)(=O)=O', 'CCC(=O)Nc1ccc2oc(CC)nc2c1', 'C[SH](=O)=O', 'CCc1nc2cc(NC(=O)C(C)N)ccc2o1', 'CC(NS(C)(=O)=O)C(N)=O', 'CCc1nc2ccccc2o1', 'CC', 'CC(NS(C)(=O)=O)C(=O)Nc1ccc2ocnc2c1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2ocnc2c1.