| 英文同义词: | 1,3-Dioxooctahydrocyclopenta[c]pyran-5,7-dicarboxylic anhydride;2-Carboxymethyl-1,3,4-cyclopentanetricarboxylic 1,4:2,3-dianhydride;4,10-Dioxatricyclo[6.3.1.02,7]dodecane-3,5,9,11-tetrone;4a,9a-Dihydro-5,9-methano-1H-pyrano[3,4-d]oxepin-1,3,6,8(4H,5H,9H)-tetrone;5,9-Methano-4a,9a-dihydro-1H-pyrano[3,4-d]oxepine-1,3,6,8(4H,5H,9H)-tetrone;5,9-Methanooctahydro-1H-pyrano[3,4-d]oxepin-1,3,6,8-tetrone |