benzofuran,ethoxy,furan
Benzofuran
71799-72-96-(Diethylamino)-3-oxo-2-(phenylamino)spiro[isobenzofuran-1(3H),9-[9H]xanthene]-5-carboxylic acid
33877-46-25'-hydroxy-3-methylidene-2-oxo-7-(prop-1-en-2-yl)octahydro-2H-spiro[1-benzofuran-6,3'-furan]-4-yl 2-methylbut-2-enoate