['CS(N)(=O)=O', 'CCCSc1nncn1-c1ccccc1', 'CCCNS(C)(=O)=O', 'Sc1nncn1-c1ccccc1', 'C[SH](=O)=O', 'NCCCSc1nncn1-c1ccccc1', 'c1ccccc1', 'CS(=O)(=O)NCCCSc1nnc[nH]1', 'CS(=O)(=O)NCCCS', 'c1ccc(-n2cnnc2)cc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(-n2cnnc2)cc1.