4,9-Epoxycevane-3-alpha,4-beta,12,14,16-beta-17,20-heptol 3-(3,4-dimethoxybenzenesulfonate) Cevane-3-alpha,4-beta,12,14,16-beta,17,20-heptol, 4,9-epoxy-, 3-(3,4- dimethoxybenzene sulfonate) FL4924000 Veratrosulfonylcevin