InChI=1S/C16H17NO7S2/c1-23-11-8-6-10(7-9-11)15(14(16(18)19)24-26(20,21)22)25-13-5-3-2-4-12(13)17/h2-9,14-15H,17H2,1H3,(H,18,19)(H,20,21,22)