吡啶 、
3β,4β,16β-triacetoxy-12,14,17-ethane-1,1,1-triyltrioxy-4α,9-epoxy-5β-cevan-20-ol 、 alkaline earth salt of/the/ methylsulfuric acid 生成 3β,4β,16β-triacetoxy-12,14,17-ethane-1,1,1-triyltrioxy-4α,9-epoxy-28-formyl-20-hydroxy-26,28-seco-27-nor-5β-cevan-25-one