InChI=1S/C27H19N5O/c33-25-16-6-2-4-8-19(16)32-27-17(25)13-30-20-10-12-29-24(22(20)27)23-21-15(9-11-28-23)14-5-1-3-7-18(14)31-26(21)27/h1-9,11,17,30,32H,10,12-13H2/t17-,27+/m1/s1