Using CC(C)(C)OC(=O)N1CCC(CC=Cc2cc(F)cc(F)c2)CC1 to produce CC(C)(C)OC(=O)N1CCC(CCCc2cc(F)cc(F)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.