InChI=1S/C20H34O10/c21-13(12-14(22)23)10-8-6-4-2-1-3-5-7-9-11-29-20-17(26)15(24)16(25)18(30-20)19(27)28/h15-18,20,24-26H,1-12H2,(H,22,23)(H,27,28)