InChI=1S/C15H24O5S/c1-9(8-16)4-11(20-21(17,18)19)7-14(2)10-5-12-13(6-10)15(12,14)3/h4,10-13,16H,5-8H2,1-3H3,(H,17,18,19)/b9-4-