Using COC(=O)CP(=O)(OC)OC, CCOC(=O)c1c(C=O)cc(CC)cc1C(F)(F)F to produce CCOC(=O)c1c(/C=C/C(=O)OC)cc(CC)cc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.