CAS No 81771-19-9 , 7H-[1,3]Dioxino[4''',5''':5'',6'']oxireno[3'',4'']pyrano[2'',3'':5',6']benz[1',2':6,7]indeno[1,2-b]furo[3',4':4,5]benz[1,2-e]indol-13(8H)-one,1,4a,4b,5b,6,7a,9,9a,10,12,12a,16,16b,16c,17,18,18a,19a-octadecahydro-5b-hydroxy-1,1,10,10,12,12,16b,16c-octamethyl-3-(2-methyl-1-propen-1-yl)-,(3S,4aR,4bR,5aS,5bS,7aS,9aR,12aR,16bS,16cR,18aS,19aS)-