Using CN1C(=O)CCc2cc(-c3cncc(O[C@H]4CCN(C(=O)OC(C)(C)C)C4)c3)c(F)cc21 to produce CN1C(=O)CCc2cc(-c3cncc(O[C@H]4CCNC4)c3)c(F)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.