Using OB(O)c1ccc(Cl)s1, CC(C)(C)OC(=O)N1CCN(c2cc(I)c(C(F)(F)F)nn2)CC1 to produce CC(C)(C)OC(=O)N1CCN(c2cc(-c3ccc(Cl)s3)c(C(F)(F)F)nn2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.