Using Cn1ncc2cc(Nc3ncnc4[nH]c(C5=CCN(C(=O)OC(C)(C)C)CC5)cc34)ccc21 to produce Cn1ncc2cc(Nc3ncnc4[nH]c(C5=CCNCC5)cc34)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.