InChI=1S/C20H24O7/c1-6-9(2)18(23)26-15-13-11(4)19(24)27-16(13)17(22)20(5,12-8-25-12)14(15)10(3)7-21/h6-7,12-17,22H,3-4,8H2,1-2,5H3/b9-6-/t12-,13-,14-,15-,16-,17-,20-/m0/s1