17555
On day 8 colitis was induced by intracolonic instillation of 2 , 4 , 6 - trinitrobenzenesulfonic acid , when overt signs of lesions develop within the next 3 days .
 Chemical: 2 , 4 , 6 - trinitrobenzenesulfonic acid
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: 2 , 4 , 6 - trinitrobenzenesulfonic acid