Using COC(=O)COc1ccc(Cl)c2nc(C)c(Cc3ccc(Cl)cc3)cc12 to produce Cc1nc2c(Cl)ccc(OCC(=O)O)c2cc1Cc1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.