InChI=1S/C15H22O4/c1-14(2)7-15-9(13(18)19)4-3-8(14)10(15)5-12(17)11(15)6-16/h8-11,16H,3-7H2,1-2H3,(H,18,19)/t8-,9+,10-,11-,15-/m0/s1