InChI=1S/C15H20N2O6S/c1-16-14(18)12-9-11(3-4-13(12)23-2)24(21,22)17-7-5-10(6-8-17)15(19)20/h3-4,9-10H,5-8H2,1-2H3,(H,16,18)(H,19,20)