Using NCCON, O=C(CCCCn1ccnc1)c1ccc(C(F)(F)F)cc1 to produce NCCON=C(CCCCn1ccnc1)c1ccc(C(F)(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.