Using CCCC1CCC(C2CCC(O)(c3ccc(OCC)c(F)c3F)CC2)C1 to produce CCCC1CCC(C2CC=C(c3ccc(OCC)c(F)c3F)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.