2-氰基-2-苯乙酸

3-phenylprop-2-ynyl 3-phenylprop-2-ynoate

3-Cyano-4-phenylpyridine-2-carboxylic acid

苯[b]呋喃-2,3-二羧酸

3-(2-hydroxyphenyl)prop-2-ynoic acid