Using CCB(CC)CC, CCOC(=O)C1=Cc2c(ccc(Cl)c2I)OC1C(F)(F)F to produce CCc1c(Cl)ccc2c1C=C(C(=O)O)C(C(F)(F)F)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.