['O=CNCC(F)(F)F', 'NCCCc1nc2ccccc2[nH]1', 'NCC(F)(F)F', 'O=CNCCCc1nc2ccccc2[nH]1', 'NC(=O)NCC(F)(F)F', 'CCCc1nc2ccccc2[nH]1', 'CC(F)(F)F', 'NC(=O)NCCCc1nc2ccccc2[nH]1', 'c1ccc2[nH]cnc2c1', 'CCCNC(=O)NCC(F)(F)F']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2[nH]cnc2c1.