Using COC(=O)c1cc(NC(=O)c2cc3cc(Cl)ccc3[nH]2)cc2c1OCCCO2 to produce O=C(Nc1cc2c(c(C(=O)O)c1)OCCCO2)c1cc2cc(Cl)ccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.