['CCCCN(C)[C@@H](C)C=O', 'NCCc1ccc(S(N)(=O)=O)cc1', 'CCCC', 'CN[C@@H](C)C(=O)NCCc1ccc(S(N)(=O)=O)cc1', 'CCCCNC', 'CCC(=O)NCCc1ccc(S(N)(=O)=O)cc1', 'CCCCN(C)[C@@H](C)C(N)=O', 'CCc1ccc(S(N)(=O)=O)cc1', 'NS(=O)(=O)c1ccccc1', 'CCCCN(C)[C@@H](C)C(=O)NCC']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.