149633-91-0 19,24-Dihydroxy-8,10,14,16,18,20,22-heptamethyl-17-oxo-2,6,8,12,14,22-tetracosahexaen-5-olide 2H-Pyran-2-one, 6-(14,19-dihydroxy-3,5,9,11,13,15,17-heptamethyl-12-oxo-3,7,9,17-nonadecatetraenyl)-5,6-dihydro- Leptolstatin