74560-39-7

17-hydroxy-4a,16,22a-trimethyl-1a,4a,5,16,17,21,22,22a-octahydro-1bH,3H,14H-spiro[3,5-methanooxireno[h][1,6,12]trioxacyclooctadecino[3,4-d]chromene-4,2'-oxirane]-7,12,18(15H)-trione