InChI=1S/C20H26O5/c1-10(9-21)11-7-12-13-8-14-19(2,3)5-4-6-20(14,18(24)25-13)15(12)17(23)16(11)22/h7,10,13-14,21-23H,4-6,8-9H2,1-3H3/t10?,13?,14?,20-/m1/s1