(6,7-二甲氧基-1H-吲哚-3-基)-乙酸甲酯

methyl 2-benzo[e][1]benzofuran-1-ylacetate

methyl 4-acetyloxybut-2-enoate

methyl 5-(3-methoxyphenyl)penta-2,4-dienoate

methyl 4-[benzyl(methyl)amino]but-2-enoate