InChI=1S/C19H26O3/c1-12(2)13-6-7-15-14(10-13)16(20)11-17-18(15,3)8-5-9-19(17,4)22-21/h6-7,10,12,17,21H,5,8-9,11H2,1-4H3/t17-,18-,19+/m1/s1