InChI=1S/C22H21NO4/c1-13(2)3-5-16-11-14(4-10-19(16)25)12-18-20(22(27)23-21(18)26)15-6-8-17(24)9-7-15/h3-4,6-11,24-25H,5,12H2,1-2H3,(H,23,26,27)