InChI=1S/C15H28O4/c1-10(8-12(3)14(17)19-6)7-11(2)9-15(5,18)13(4)16/h8,10-11,13,16,18H,7,9H2,1-6H3/b12-8+/t10-,11+,13+,15-/m1/s1