InChI=1S/C20H25NO8S/c1-26-16-7-4-15(13-18(16)27-2)10-11-21-20(22)9-6-14-5-8-17(19(12-14)28-3)29-30(23,24)25/h4-5,7-8,12-13H,6,9-11H2,1-3H3,(H,21,22)(H,23,24,25)