Using COC(=O)/C=C/c1ccc(C(c2cc(F)ccc2F)S(=O)(=O)c2ccc(Cl)cc2)nc1 to produce O=C(O)/C=C/c1ccc(C(c2cc(F)ccc2F)S(=O)(=O)c2ccc(Cl)cc2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.