64421-28-9 Cyclopenta(c)pyran-4-carboxylic acid, 1-(beta-D-glucopyranosyloxy)-1,4a,5,6,7,7a-hexahydro-5,7-dihydroxy-7-methyl-, methyl ester, (1S-(1alpha,4aalpha,5alpha,7alpha,7aalpha))- Shanzhiside methyl ester