['O=[SH](=O)/C=C/c1ccccc1', 'FC(F)(F)c1ccc(N2CCCNCC2)nc1', 'FC(F)(F)c1cccnc1', 'O=S(=O)(/C=C/c1ccccc1)N1CCCNCC1', 'FC(F)F', 'O=S(=O)(/C=C/c1ccccc1)N1CCCN(c2ccccn2)CC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=S(=O)(/C=C/c1ccccc1)N1CCCN(c2ccccn2)CC1.