Using C1COCCO1, CCOC(=O)c1cc(-c2ccc(OC)cc2)nc(N)c1C(=O)OCC to produce CCOC(=O)c1cc(-c2ccc(OC)cc2)[nH]c(=O)c1C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.