InChI=1S/C15H22O4/c1-8(2)10-5-6-12(15(18)19)11-4-3-9(14(16)17)7-13(10)11/h7-8,10-13H,3-6H2,1-2H3,(H,16,17)(H,18,19)/t10-,11-,12+,13-/m1/s1