InChI=1S/C19H26O4/c1-13(2)5-4-6-14(3)7-10-16-15(9-12-18(21)22)8-11-17(20)19(16)23/h5,7-8,11,20,23H,4,6,9-10,12H2,1-3H3,(H,21,22)