Using CCn1c(Nc2nc3ccc(C(F)(F)F)cc3s2)nc2cc(C(=O)O)ccc21, CSCCN to produce CCn1c(Nc2nc3ccc(C(F)(F)F)cc3s2)nc2cc(C(=O)NCCSC)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.