(7R,8R,10R,13S,17S)-17-[3-(acetyloxy)-2-oxopropyl]-4,4,8,10,13-pentamethyl-3,15-dioxo-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-7-yl rel-acetate (non-preferred nam 1H,10H-furo[3',4':4a,5]naphtho[2,1-c]pyran-1,8(4bH)-dione, 3-(3-furanyl)-3,4,4a,5,6,11,12,12a-octahydro-4a-methyl-, (3R,4aR,4bR,10aS,12aR)- 21,24,25,26,27-Pentanor-15,22-oxo-7alpha,23-diacetate-apotirucalla(eupha)-1-en-3-one Acetic acid 17-(3-acetoxy-2-oxo-propyl)-4,4,8,10,13-pentamethyl-3,15-dioxo-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-7-yl ester InChI=1/C29H40O7/c1-16(30)35-15-19(32)12-18-13-20(33)25-27(18,5)10-8-21-28(6)11-9-23(34)26(3,4)22(28)14-24(29(21,25)7)36-17(2)31/h9,11,18,21-22,24-25H,8,10,12-15H2,1-7H3/t18-,21?,22?,24-,25?,27+,28-,29+/m1/s