Using O=C(Cl)Cl, COc1ccc(C[C@@H](C)N(Cc2ccc(OC)c(OC)c2)CC(O)c2cccc(Cl)c2)cc1OC to produce COc1ccc(C[C@@H](C)N2C[C@@H](c3cccc(Cl)c3)OC2=O)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.