InChI=1S/C22H34O7/c1-6-8-14(4)9-7-10-15(5)12-16(11-13(2)3)28-22-19(25)17(23)18(24)20(29-22)21(26)27/h6,8,10-11,16-20,22-25H,1,7,9,12H2,2-5H3,(H,26,27)/b14-8+,15-10-