InChI=1S/C13H20N2O6S/c14-9-12(21-22(18,19)20)7-8-15-13(17)6-3-10-1-4-11(16)5-2-10/h1-2,4-5,12,16H,3,6-9,14H2,(H,15,17)(H,18,19,20)