6271
The method allows for specific identification of toxic retronecine and otonecine - type PAs by comparison to reference compounds via a spectral library .
 Chemical: retronecine; Chemical: otonecine
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: retronecine; Chemical: otonecine