InChI=1/C18H19NO4S2/c1-18(2,3)17(15-5-4-10-24-15)19-25(21,22)13-7-8-14-12(11-13)6-9-16(20)23-14/h4-11,17,19H,1-3H3/t17-/m1/s1 33831B3B8A22C22B