InChI=1S/C20H28O5/c1-18(2)8-5-9-20(17(23)24)13(18)7-6-11-10-12(19(3,4)25)15(21)16(22)14(11)20/h10,13,21-22,25H,5-9H2,1-4H3,(H,23,24)/t13?,20-/m1/s1