2,2-dimethoxy-5,5-dimethyl-1,3,4-oxadiazole

exo-3-chloropentafluorobicyclo<2.2.0>hex-5-en-2-one

dodecafluoro-1,2-epoxycycloheptane

六氟苯

(1R,4S,5S,6S)-5,6-dibromo-1,2,3,4,5,6-hexafluorobicyclo[2.2.0]hex-2-ene