InChI=1S/C16H26O4S/c1-6-8-15(5)16(20-21(17,18)19)12-11-14(4)10-7-9-13(2)3/h6,8-9,11,16H,1,7,10,12H2,2-5H3,(H,17,18,19)/b14-11-,15-8+