InChI=1/C18H13NO4/c1-9-8-14(20)19-11-7-6-10-16-12(22-2)4-3-5-13(16)23-18(21)17(10)15(9)11/h3-8H,1-2H3,(H,19,20)/f/h19H 1D5593473E887034