Synonyms: [9,9'-bianthracene]-2-carboxylic acid, 5,5'-bis(hexopyranosyloxy)-9,9',10,10'-tetrahydro-4,4'-dihydroxy-2'-(hydroxymethyl)-10,10'-dioxo-;4-hydroxy-9-[4-hydroxy-2-(hydroxymethyl)-10-oxo-5-[3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-yl]oxy-9H-anthracen-9-yl]-10-oxo-5-[3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-yl]oxy-9H-anthracene-2-carboxylic acid;5,5'-Bis(hexopyranosyloxy)-4,4'-dihydroxy-2'-(hydroxymethyl)-10,10'-dioxo-9,9',10,10'-tetrahydro-9,9'-bianthracene-2-carboxylic acid;