Using COC(=O)/C(=C/c1ccc(OC)c(F)c1)C(=O)OC(C)(C)C to produce COC(=O)C(Cc1ccc(OC)c(F)c1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.