Using Cc1ccc2oc(=O)n(Cc3cccc(-c4ncc(N5CCN(C(=O)OC(C)(C)C)CC5)cn4)c3)c2n1 to produce Cc1ccc2oc(=O)n(Cc3cccc(-c4ncc(N5CCNCC5)cn4)c3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.