InChI=1S/C20H34O7/c1-9-7-20(8-26-20)18(24)12(4)16(22)10(2)14(6)27-19(25)13(5)17(23)11(3)15(9)21/h9-17,21-23H,7-8H2,1-6H3/t9-,10-,11+,12+,13+,14+,15-,16-,17-,20+/m0/s1