['C[SH](=O)=O', 'N#Cc1cccnc1NC1CCCNC1', 'N#Cc1cccnc1', 'CS(=O)(=O)N1CCCC(N)C1', 'N#Cc1cccnc1N', 'CS(=O)(=O)N1CCCCC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(NC2CCCNC2)nc1.