N,N-diethyl-6-oxo-1-(1,3-thiazol-2-yl)pyridine-3-carboxamide

methyl 2-oxo-3-oxabicyclo[2.2.0]hex-5-ene-5-carboxylate

2-羟基-[1,1-联苯]-4-羧酸甲酯

methyl fluoranthene-8-carboxylate