InChI=1S/C20H24O7/c1-5-9(2)18(22)25-13-7-20(4)17(27-20)16-15(26-16)11(8-21)6-12-14(13)10(3)19(23)24-12/h5-6,12-17,21H,3,7-8H2,1-2,4H3/b9-5-,11-6-/t12-,13+,14-,15-,16-,17+,20-/m0/s1