Using O=C([O-])O, CC(=O)c1ccc(OCc2ccccc2)c(C(=O)Nc2cccnc2)c1 to produce CC(C)(O)c1ccc(OCc2ccccc2)c(C(=O)Nc2cccnc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.