Using O=C([O-])[O-], C=CCc1c(O)c(OC)cc2ncnc(Nc3ccccc3)c12 to produce C=CCc1c(OC)c(OC)cc2ncnc(Nc3ccccc3)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.