InChI=1S/C23H21N5O/c24-19(8-17-11-26-23-4-2-1-3-21(17)23)14-29-20-9-16(10-25-13-20)15-5-6-22-18(7-15)12-27-28-22/h1-7,9-13,19,23H,8,14,24H2,(H,27,28)/t19-,23?/m0/s1