Using O=C(Cc1ccc(C(F)(F)F)cn1)c1cccc(F)c1, NO to produce ON=C(Cc1ccc(C(F)(F)F)cn1)c1cccc(F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.