Using CNCc1cc(CO)cc(-c2cc(-c3cc4ccccc4n3C(=O)OC(C)(C)C)c(OC)nn2)c1 to produce CNCc1cc(CO)cc(-c2cc(-c3cc4ccccc4[nH]3)c(=O)[nH]n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.