10514
In solution , 4 , 4 ' - bis ( 2 - benzoxazolyl ) stilbene ( BBS ) was found to exhibit consistently high absolute fluorescence quantum yields ( Phi ( fl ) >= 0 . 88 ) and a monoexponential lifetime , both independent of BBS concentration .
 Chemical: 4 , 4 ' - bis ( 2 - benzoxazolyl ) stilbene; Chemical: BBS; Chemical: BBS
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: 4 , 4 ' - bis ( 2 - benzoxazolyl ) stilbene; Chemical: BBS; Chemical: BBS