InChI=1S/C21H27NO7S/c1-14(23)22(2,3)12-11-16-7-10-19(24)21(28-4)20(16)18(22)13-15-5-8-17(9-6-15)29-30(25,26)27/h5-10,18,24H,11-13H2,1-4H3,(H,25,26,27)/q+1