ethyl 4-(N,N-diethylamino)butanoate hydrochloride

3-(1-benzofuran-2-yl)-5-ethoxy-3,4-dihydro-2H-pyrrole

2-ethoxy-7,8-dimethoxy-5-phenyl-1H-3-benzazepine

5-ethoxy-3,6-dihydro-2H-1,4-oxazine

tetraethyl propa-1,2-diene-1,1,3,3-tetracarboxylate