InChI=1S/C24H34O7/c1-16(2)8-6-9-17(3)10-7-12-24-22(31-24)14-21(30-23(24)27)20(15-29-19(5)26)11-13-28-18(4)25/h8,10-11,13,20-22H,6-7,9,12,14-15H2,1-5H3/b13-11+,17-10+