InChI=1S/C20H28O7/c1-6-10(2)17(22)25-13-9-20(5)15(27-20)7-14(21)19(4,24)8-12-16(13)11(3)18(23)26-12/h6,12-16,21,24H,3,7-9H2,1-2,4-5H3/b10-6-/t12-,13-,14+,15-,16+,19+,20+/m1/s1