Using CCOC(C)=O, COC(=O)c1c(F)c(F)c(CC(=O)OC(c2ccccc2)c2ccccc2)c(F)c1F to produce COC(=O)c1c(F)c(F)c(C(CO)C(=O)OC(c2ccccc2)c2ccccc2)c(F)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.