InChI=1S/C20H28O5/c1-10(2)12-9-11-5-6-13-19(3,4)8-7-14(21)20(13,18(24)25)15(11)17(23)16(12)22/h9-10,13-14,21-23H,5-8H2,1-4H3,(H,24,25)/t13?,14?,20-/m0/s1