Using CCOC(C)=O, CC(C)(C)NC(=O)NCc1cccc(-c2cc(-c3nnn[nH]3)ccc2O)c1 to produce CC(C)(C)NC(=O)NCc1cccc(-c2cc(-c3nnn[nH]3)cc(C=O)c2O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.