InChI=1S/C20H28O6/c1-10(8-21)11-6-12-15(13(23)7-11)20(9-22)14(24)4-5-19(2,3)18(20)17(26)16(12)25/h8-9,11-15,17-18,23-24,26H,1,4-7H2,2-3H3/t11-,12+,13-,14-,15-,17+,18+,20-/m0/s1