InChI=1S/C16H24O4/c1-15(2)8-16-10(14(18)19)5-4-9(15)11(16)6-13(17)12(16)7-20-3/h9-12H,4-8H2,1-3H3,(H,18,19)/t9-,10+,11-,12-,16-/m0/s1