Crystal structure of 4,4′-(1,3,5,7-tetraoxo-3a,4,4a,5,7,7a,8,8a-octahydro-4,8-ethenopyrrolo [3,4-<i>f</i>]isoindole-2,6(1<i>H</i>,3<i>H</i>)-diyl)dibenzoic acid, C<sub>26</sub>H<sub>18</sub>N<sub>2</sub>O<sub>8</sub>
Zeitschrift für Kristallographie. New crystal structures/Zeitschrift für Kristallographie. New crystal structures