9,10-o-Benzeno-1,4-methanoanthracene-4a,9a-dicarboxylicanhydride (8CI); 9,10-o-Benzeno-1,4-methano-4a,9a-(methanoxymethano)anthracene-17,19-dione;9,10[1',2']-Benzeno-1,4-methanoanthracene-4a,9a-dicarboxylic anhydride
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