1 BG0 (4r)-2,7,8-triamino-4-(3-bromo-4,5-dimethoxyphenyl)-4h-1-benzopyran-3-carbonitrile 1.000 2 253 10,11-dimethoxy-4-methyldibenzo[C,f]-2,7-naphthyridine-3,6-diamine 0.700