3997
Chiral discrimination of rac - 1 , 1 ' - bi - 2 - naphthol and rac - 2 , 2 , 2 - trifluoro - 1 - ( 9 - anthryl ) ethanol was performed to determine the chiral recognition ability of the chiral complex ( 1 ) and its self - assembled framework ( 2 ) .
 Chemical: rac - 1 , 1 ' - bi - 2 - naphthol; Chemical: rac - 2 , 2 , 2 - trifluoro - 1 - ( 9 - anthryl ) ethanol
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: rac - 1 , 1 ' - bi - 2 - naphthol; Chemical: rac - 2 , 2 , 2 - trifluoro - 1 - ( 9 - anthryl ) ethanol