InChI=1S/C32H30N2O4/c1-17(2)13-15-23-25(19-9-5-7-11-21(19)33-23)27-29(35)31(37)28(32(38)30(27)36)26-20-10-6-8-12-22(20)34-24(26)16-14-18(3)4/h5-14,33-35,38H,15-16H2,1-4H3