InChI=1S/C15H24O5S/c1-9(8-20-21(17,18)19)6-12-5-4-10(2)15-13(16)7-11(3)14(12)15/h6,10,12-13,15-16H,4-5,7-8H2,1-3H3,(H,17,18,19)/b9-6+