Using CC(=O)OCC(=O)Cl, Cc1cc(Cl)nc(Cl)c1C(=O)NCC[C@@H](C)N1CCC(NCc2ccsc2)CC1 to produce Cc1cc(Cl)nc(Cl)c1C(=O)NCC[C@@H](C)N1CCC(N(Cc2ccsc2)C(=O)CO)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.