| Poly[(9,18-dihydrodibenzo[b,i][1,4,8,11]tetraazacyclotetradecine-2,16-diyl)carbonyl(1,3-dihydro-1,3-dioxo-2H-isoindole-5,2-diyl)-1,4-phenyleneoxy-1,2-ethanediyloxy-1,2-ethanediyloxy-1,2-ethanediyloxy-1,4-phenylene(1,3-dihydro-1,3-dioxo-2H-isoindole-2,5-di |
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