Using COCc1c(F)c(F)c(CO)c(F)c1F, CC(C)=CC1C(C(=O)O)C1(C)C to produce COCc1c(F)c(F)c(COC(=O)C2C(C=C(C)C)C2(C)C)c(F)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.