Using CCOC(=O)c1nc2ccc(OC)cc2[nH]c1=O, O=C([O-])[O-] to produce CCOC(=O)c1nc2ccc(OC)cc2n(C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.