004817: InChI=1.12Beta/C20H30O4/c1-3-5-7-11-15-23-19(21)17-13-9-10-14-18(17)20(22)24-16-12-8-6-4-2/h1-2H3,3-8H2,9-10H,11-12H2,13-14H,15-16H2