InChI=1S/C18H19NO9S/c1-27-16-9-11(8-14(20)18(16)23)2-7-17(22)19-10-15(21)12-3-5-13(6-4-12)28-29(24,25)26/h2-9,15,20-21,23H,10H2,1H3,(H,19,22)(H,24,25,26)