22704
The estrogenic activity of butylparaben was markedly decreased by incubation with rat liver microsomes , and the decrease of activity was blocked by a carboxylesterase inhibitor .
 Chemical: butylparaben
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: butylparaben