InChI=1S/C21H29NO7S/c1-16(2)14-22-21(23)19(29-30(24,25)26)10-8-6-4-3-5-7-9-17-11-12-18-20(13-17)28-15-27-18/h6-9,11-13,16,19H,3-5,10,14-15H2,1-2H3,(H,22,23)(H,24,25,26)/b8-6+,9-7+