2419
Median time to CR when RD was given as 2nd or > 2 ( nd ) - line treatment at 4 and 11 months , respectively .
 Chemical: RD
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: RD