['CC(C)CN(CC=O)CC(C)C', 'NS(=O)(=O)c1ccc2c(c1)CCN2', 'CC(C)C', 'CC(C)CNCC(=O)N1CCc2cc(S(N)(=O)=O)ccc21', 'CC(C)CNCC(C)C', 'CC(=O)N1CCc2cc(S(N)(=O)=O)ccc21']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2c(c1)CCN2.