1-(12-methoxypodocarpa-8,11,13-trien-13-yl)ethanone InChI=1/C20H28O2/c1-13(21)15-11-14-7-8-18-19(2,3)9-6-10-20(18,4)16(14)12-17(15)22-5/h11-12,18H,6-10H2,1-5H ethanone, 1-(4b,5,6,7,8,8a,9,10-octahydro-3-methoxy-4b,8,8-trimethyl-2-phenanthrenyl)-