InChI=1/C17H20N2O7S/c1-23-12-5-6-16(13(9-12)24-2)27(21,22)19-18-10-11-7-14(25-3)17(20)15(8-11)26-4/h5-10,19-20H,1-4H3/b18-10- 5FD89F10E5581130