Using Nc1ncc(-c2nn3ccnc3s2)cc1C(F)(F)F, O=C1CCC(=O)N1I to produce Nc1ncc(-c2nn3c(I)cnc3s2)cc1C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.