Using C=CCc1c(O)c(Cl)cc2c(-c3ccccc3F)noc12, O=C(OO)c1cccc(Cl)c1 to produce OCC1Cc2c(c(Cl)cc3c(-c4ccccc4F)noc23)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.