9159
The olfactory GSTs conjugated prototypical GST substrates , but only OlfGST rho catalyzed the demethylation of the pesticide methyl parathion .
 Chemical: methyl parathion
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: methyl parathion