Szukana fraza: [Opis = "tytul rownolegly\: Isoquinoline Dyes. 4, Synthesis and properties of some coloured isomeric unsymmetrically disubstituted derivatives 10,11\-dimethylbenzimidazo\[2,1\-a\]benz\[de\]isoquinoline\-7\-one"]

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