二丙基二硫

1,3-dimethyl-2,4-dioxodecahydro-7bH-cyclopenta[3,4]cyclobuta[1,2-d]pyrimidine-7b-carbonitrile-4a-d

2-(1,3-dimethyl-2,4-dioxo-6-(propylthio)hexahydropyrimidin-5-yl-5-d)cyclopentane-1-carbonitrile

propene

ethene