2054
Acrolein instillation significantly increased the muscle contractions of rat bladder detrusor after 1 and 6 h but markedly decreased detrusor contractions after 24 h .
 Chemical: Acrolein
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: Acrolein