InChI=1/C20H19NO6S/c1-2-21(12-15-13-25-18-5-3-4-6-19(18)26-15)28(23,24)16-8-9-17-14(11-16)7-10-20(22)27-17/h3-11,15H,2,12-13H2,1H3/t15-/m0/s1 D4EA7EFB40499DD3