9 9-bis 4-(2-hydroxyethoxy)phenyl fluorene July 8, 2019 16 32 64 128 9 9 bis 4 2 hydroxyethoxy phenyl fluorene 9 9-bis(4-hydroxyphenyl)fluorene 9 9-bis(4-aminophenyl)fluorene 9 9-bis(methoxymethyl)-9h-fluorene 9-phenyl-2 3 7-trihydroxy-6-fluorone
