Using CCOC(=O)CNc1ccc2oc3c(OC)ccc(C(=O)Nc4c(Cl)cncc4Cl)c3c2c1 to produce COc1ccc(C(=O)Nc2c(Cl)cncc2Cl)c2c1oc1ccc(NCC(=O)O)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.