Using NCC(=O)N1Cc2ccccc2Oc2ccc(Cl)cc21, O=C(O)CCc1ccncc1 to produce O=C(CCc1ccncc1)NCC(=O)N1Cc2ccccc2Oc2ccc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.