6-methoxy-2-nitro-1-benzofuran

4-amino-2-methylsulfanyl-5-nitrothiophene-3-carbonitrile

7-溴-2-硝基苯并[e][1]苯并呋喃

2-硝基-7-甲氧基萘并[2,1-B]呋喃

5-甲氧基-2-硝基苯并[e][1]苯并呋喃