Using CCCCOc1ccc(C2(O)CCC(C3CCC4(CC3)OCCO4)CC2)c(F)c1F to produce CCCCOc1ccc(C2CC=C(C3CCC4(CC3)OCCO4)CC2)c(F)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.