['C=CCN', 'CNc1nc(S[C@H](C)C=O)nc2ccccc12', 'C=CC', 'CNc1nc(S[C@H](C)C(N)=O)nc2ccccc12', 'C=CCNC(=O)CC', 'CNc1nc(S)nc2ccccc12', 'CN', 'C=CCNC(=O)[C@@H](C)Sc1ncc2ccccc2n1', 'C=CCNC(=O)[C@@H](C)S', 'CNc1ncnc2ccccc12']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2ncncc2c1.