(5beta,7beta,8alpha,9beta,10alpha,13alpha,15alpha)-7,9-dihydroxy-15-{[(2Z)-2-methylbut-2-enoyl]oxy}kaur-16-en-18-oic acid InChI=1/C25H36O6/c1-6-14(2)20(27)31-19-15(3)16-8-11-25(30)23(5)10-7-9-22(4,21(28)29)17(23)12-18(26)24(19,25)13-16/h6,16-19,26,30H,3,7-13H2,1-2,4-5H3,(H,28,29)/b14-6-/t16?,17-,18+,19+,22-,23-,24-,25-/m1/s ent-15beta-Angeloyloxy-7alpha,9alpha-dihydroxy-kaur-16-en-19-oic acid ergosta-2,5,24-triene-1,26-dione, 22,26-epoxy-20-hydroxy-, (22R)-