6,9-dimethyl-3-nitropyrido[2,3-b][1,5]benzoxazepin-5-one

3-amino-6,7,9-trimethylpyrido[2,3-b][1,5]benzoxazepin-5-one

5-硝基-2-氯吡啶-3-羧酸

2-methoxy-5-nitropyridine-3-carboxamide