Using COC(=O)c1cc(Oc2nc3cc(-c4ccc5ccccc5c4)c(Cl)cc3[nH]2)ccc1C to produce Cc1ccc(Oc2nc3cc(-c4ccc5ccccc5c4)c(Cl)cc3[nH]2)cc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.