InChI=1S/C17H26O4/c1-12(18)21-14(2,3)13-6-7-15(4)11-20-16(5)8-9-19-17(15,16)10-13/h8-9,13H,6-7,10-11H2,1-5H3/t13-,15+,16-,17-/m1/s1