Using Cc1ccc(-c2c(C(O)c3c(Cl)ncnc3Cl)cnn2C)cc1 to produce Cc1ccc(-c2c(C(=O)c3c(Cl)ncnc3Cl)cnn2C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.