InChI=1S/C20H34O7/c1-2-3-6-10-14(21)19(26)20(27)18-13(15(22)12-16(18)23)9-7-4-5-8-11-17(24)25/h4,7,13,15-16,18-20,22-23,26-27H,2-3,5-6,8-12H2,1H3,(H,24,25)