11-[(<i>E</i>)-4-Bromobenzylidene]-8-(4-bromophenyl)-14-hydroxy-3,13-diazaheptacyclo[13.7.1.1<sup>9,13</sup>.0<sup>2,9</sup>.0<sup>2,14</sup>.0<sup>3,7</sup>.0<sup>19,23</sup>]tetracosa-1(22),15,17,19(23),20-pentaen-10-one
Acta crystallographica. Section E