Using COC(=O)C(Cc1c(Cl)cccc1Cl)N1CC(Oc2c(F)cccc2F)=CC1=O to produce O=C(O)C(Cc1c(Cl)cccc1Cl)N1CC(Oc2c(F)cccc2F)=CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.