17842
Conclusive evidence for a monofluoroacetate presence came from its isolation from the freeze - dried extract of stem bark .
 Chemical: monofluoroacetate
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: monofluoroacetate