189139-22-8

1,1':3',1''-Terphenyl,4,4''-bis[[3,5-bis[[3,5-bis(phenylethynyl)phenyl]ethynyl]phenyl]ethynyl]-5'-[4-[[3,5-bis[[3,5-bis(phenylethynyl)phenyl]ethynyl]phenyl]ethynyl]phenyl]-