Using COc1cc(OC[C@@H]2CCCN2)c2c(Nc3ccc(F)c(Cl)c3)ncnc2c1, O=C(O)CO to produce COc1cc(OC[C@@H]2CCCN2C(=O)CO)c2c(Nc3ccc(F)c(Cl)c3)ncnc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.