Using N=C(OCC(F)(F)F)C(=N)OCC(F)(F)F, Cl[Sb](Cl)c1ccccc1 to produce FC(F)(F)COC1=N[Sb](c2ccccc2)N=C1OCC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.