InChI=1S/C15H20O3/c1-14(2)5-8-4-9(7-16)11-12(17)13(18)15(11,3)10(8)6-14/h4,7-8,10-11,13,18H,5-6H2,1-3H3/t8-,10+,11-,13-,15-/m1/s1