Using COC(=O)CC1COc2ccccc2N1, O=C1COc2ccc(C(=O)O)cc2N1 to produce COC(=O)CC1COc2ccccc2N1C(=O)c1ccc2c(c1)NC(=O)CO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.