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