Using COc1ccc([C@H]2[C@H]3CCc4ccc(OC)cc4C3=NN2C(=O)COC(C)=O)cc1 to produce COc1ccc([C@H]2[C@H]3CCc4ccc(OC)cc4C3=NN2C(=O)CO)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.