InChI=1S/C19H24O4/c1-13(2)5-4-11-19(3)12-10-15-14(7-9-17(21)22)6-8-16(20)18(15)23-19/h5-6,8,10,12,20H,4,7,9,11H2,1-3H3,(H,21,22)