Using COc1cc(OCc2ccccc2)cc(C(=O)Nc2cc3c(cc2C(C)=O)OCO3)c1 to produce COc1cc(OCc2ccccc2)cc(C2=Nc3cc4c(cc3C(=O)C2)OCO4)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.