InChI=1S/C18H21NO9S/c1-27-16-9-11(8-14(21)18(16)28-29(24,25)26)2-7-17(23)19-10-15(22)12-3-5-13(20)6-4-12/h3-6,8-9,15,20-22H,2,7,10H2,1H3,(H,19,23)(H,24,25,26)