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