fen1
leave instructions; to order

strokes 7
radical
strokes after radical 4
苯并噻吩 苯並噻吩 ben3 bing4 sai1 fen1
benzothiophene C8H9, a heterocyclic compound (with one benzene ring and one cyclopentene ring)

卟吩 卟吩 bu3 fen1
porphin C20H14N4

吩咐 吩咐 fen1 fu4
to tell; to instruct; to command