苯並噻吩 [ㄅㄣˇ ㄅㄧㄥˋ ㄙㄞ ㄈㄣ; ben3 bing4 sai1 fen1] benzothiophene C8H9, a heterocyclic compound (with one benzene ring and one cyclopentene ring) ◄ ►