Using COC(=O)c1ccc(Cc2nc3ccccc3[nH]2)cc1, O=C([O-])[O-] to produce COC(=O)c1ccc(Cc2nc3ccccc3n2C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.