英文别名
[4,4']bipyranylidene-2,6,2',6'-tetracarboxylic acid tetraethyl ester;[4,4']Bipyranyliden-2,6,2',6'-tetracarbonsaeure-tetraaethylester;Tetraethyl delta4,4'-BI-4H-pyran-2,2',6,6'-tetracarboxylate;diethyl 4-[2,6-bis(ethoxycarbonyl)pyran-4-ylidene]pyran-2,6-dicarboxylate