英文别名
Ethyl 2-hydroxy-2-methyl-7-(3-nitrobenzylidene)-4-(3-nitrophenyl)-2,3,4,5,6,7-hexahydrocyclopenta-[b] pyran-3-carboxylate;ethyl 2-hydroxy-2-methyl-4-(3-nitrophenyl)-7-[(3-nitrophenyl)methylidene]-3,4,5,6-tetrahydrocyclopenta[b]pyran-3-carboxylate