InChI=1S/C22H19NO4/c1-22(2)10-9-15-11-13(3-8-18(15)27-22)12-17-19(21(26)23-20(17)25)14-4-6-16(24)7-5-14/h3-11,24H,12H2,1-2H3,(H,23,25,26)