InChI=1S/C27H26N4O2/c1-30-13-6-7-17(30)12-14-31-16-21(19-9-3-5-11-23(19)31)25-24(26(32)29-27(25)33)20-15-28-22-10-4-2-8-18(20)22/h2-5,8-11,15-17,28H,6-7,12-14H2,1H3,(H,29,32,33)/t17-/m1/s1