InChI=1/C20H20N2O5S/c1-4-28(24,25)16-8-9-18(26-3)17(11-16)22-20-21-12-19(27-20)15-7-5-6-14(10-15)13(2)23/h5-12H,4H2,1-3H3,(H,21,22)/f/h22H C51ED15459217A3B