['CNCCC#N', 'CN(CC=O)Cc1cscn1', 'CNCc1cscn1', 'CC(=O)N(C)CCC#N', 'CCC#N', 'CNC(=O)CN(C)Cc1cscn1', 'Cc1cscn1', 'CNCC(=O)N(C)CCC#N', 'c1cscn1', 'CN(C)CC(=O)N(C)CCC#N']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cscn1.