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2,3-DIHYDROBENZOFURAN-5-BORONIC ACID 3-ISOPROPYLPHENYLBORONIC ACID 9,9-Dihexylfluorene-2,7-bis(trimethyleneborate) 9 9-DIDODECYLFLUORENE-2 7-DIBORONIC ACID 4-Ethylphenylboronic acid 9 9-DIHEXYLFLUORENE-2 7-DIBORONIC ACID 2,5-BIS(HEXYL)-1,4-BENZENEBIS(BORONIC ACID) 9 9-DIOCTYLFLUORENE-2 7-BIS(TRIMETHYLBO&