InChI=1S/C16H26O4S/c1-5-8-16(13-20-21(17,18)19)12-7-11-15(4)10-6-9-14(2)3/h5,8-9,11H,1,6-7,10,12-13H2,2-4H3,(H,17,18,19)/b15-11-,16-8-