InChI=1S/C20H24O5S/c1-3-20(21)11-9-18-17-6-4-13-12-14(25-26(22,23)24)5-7-15(13)16(17)8-10-19(18,20)2/h1,5,7,12,16-18,21H,4,6,8-11H2,2H3,(H,22,23,24)/p-1/t16-,17-,18+,19+,20+/m1/s1