2',3',4',5',6'-五氟苯乙酮

Ethyl pentafluorobenzoylpyruvate

(E)-1-(hydroxy(2,3,4,5-tetrafluoro-6-hydroxyphenyl)methylene)-2,3,4,6,7,8-hexahydro-1H-pyrazino[1,2-a]pyrazin-9-ol