['CSC(C)C=O', 'Cn1ccnc1C(O)(CCN)C(F)(F)F', 'CSC(C)C(N)=O', 'CCC(O)(c1nccn1C)C(F)(F)F', 'CS', 'CCC(=O)NCCC(O)(c1nccn1C)C(F)(F)F', 'Cn1ccnc1', 'CSC(C)C(=O)NCCC(O)C(F)(F)F']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1c[nH]cn1.