英文名称:Imidazolium compounds, 2-(C15-19 and C15-19-unsatd. alkyl)-1-[2-(C16-20 and C16-20-unsatd. amido)ethyl]-4,5-dihydro-1-methyl, Me sulfates; Imidazolium compounds, 2-(C15-19 and C15-19-unsatd. alkyl)-1-(2-(C16-20 and C16-20-unsatd. amido)ethyl)-4,5-dihydro-1-methyl, Me sulfates