747
In contrast , 2R , 4R - APDC injections were ineffective .
 Chemical: 2R , 4R - APDC
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: 2R , 4R - APDC