Synthesis and crystal structure of di-<i>tert</i>-butyl 1″-acetyl-2,2″,9′-trioxo-4<i>a</i>′,9<i>a</i>′-dihydro-1′<i>H</i>,3′<i>H</i>,9′<i>H</i>-dispiro[indoline-3,2′-xanthene-4′,3″-indoline]-1,3′-dicarboxylate, C<sub>39</sub>H<sub>38</sub>N<sub>2</sub>O<sub>9</sub>
Zeitschrift für Kristallographie. New crystal structures/Zeitschrift für Kristallographie. New crystal structures