Using S=C=S, NNC(=O)c1ccn2c(-c3cccc(NC(=O)NCC(F)(F)F)c3)cnc2c1 to produce O=C(NCC(F)(F)F)Nc1cccc(-c2cnc3cc(-c4n[nH]c(=S)o4)ccn23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.