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