Using CN(Cc1ccccc1)c1cnc2cc(-c3cnn(C(=O)OC(C)(C)C)c3)ccc2n1 to produce CN(Cc1ccccc1)c1cnc2cc(-c3cn[nH]c3)ccc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.