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