InChI=1S/C20H25NO8S/c1-21-11-20(29-30(23,24)25)14-10-18(27-3)16(22)9-13(14)15(21)7-12-5-6-17(26-2)19(8-12)28-4/h5-6,8-10,15,20,22H,7,11H2,1-4H3,(H,23,24,25)