Using COc1ccc(C)n2nc(CCc3c[nH]c(-c4ccccc4)n3)nc12, O=C([O-])[O-] to produce COc1ccc(C)n2nc(CCc3cn(C)c(-c4ccccc4)n3)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.