5H-Benzocycloheptene-6,8-dicarboxylicacid, 5,9-dioxo-, dimethyl ester (9CI); 5H-Benzocycloheptene-6,8-dicarboxylicacid, 6,7,8,9-tetrahydro-5,9-dioxo-, dimethyl ester (7CI,8CI); NSC 380246
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