InChI=1S/C19H24O5/c1-13(12-20)4-3-10-19(2)11-9-15-14(6-8-17(22)23)5-7-16(21)18(15)24-19/h4-5,7,9,11,20-21H,3,6,8,10,12H2,1-2H3,(H,22,23)/b13-4+