Using COc1ccc2nc(-c3cc(-c4ccc(N5CCN(C(=O)OC(C)(C)C)CC5)nc4)cnc3N)[nH]c2c1 to produce COc1ccc2nc(-c3cc(-c4ccc(N5CCNCC5)nc4)cnc3N)[nH]c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.