Using COc1cc(Cl)c(-n2c(=O)[nH]c3c(OC)nc(CO)nc32)cc1OCc1c(OC)ccc(F)c1F, ClC(Cl)(Cl)Cl to produce COc1cc(Cl)c(-n2c(=O)[nH]c3c(OC)nc(CCl)nc32)cc1OCc1c(OC)ccc(F)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.