InChI=1/C21H18N2O2/c24-20-18-15-3-4-16(12-15)19(18)21(25)23(20)17-5-1-13(2-6-17)11-14-7-9-22-10-8-14/h1-10,15-16,18-19H,11-12H2/t15-,16+,18-,19+ 4406BBBC4F7F58F5