InChI=1S/C22H29NO8S/c1-14(24)23(2,3)13-19(25)17-10-11-20(29-4)22(30-5)21(17)18(23)12-15-6-8-16(9-7-15)31-32(26,27)28/h6-11,18-19,25H,12-13H2,1-5H3,(H,26,27,28)/q+1