InChI=1S/C20H24O5/c1-6-12(3)19(22)24-16-9-11(2)7-8-15(21)13(4)10-17-18(16)14(5)20(23)25-17/h6-7,10,16-18H,5,8-9H2,1-4H3/b11-7+,12-6-,13-10+