Using O=C(Cl)Cl, CC(C)[C@@H](NCCNCc1cccc(OCc2ccccc2)c1)C(=O)OC(C)(C)C to produce CC(C)[C@H](C(=O)OC(C)(C)C)N1CCN(Cc2cccc(OCc3ccccc3)c2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.