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Using a structure based design approach we have identified a series of indazole substituted pyrrolopyrazines , which are potent inhibitors of JAK3 .
 Chemical: indazole; Chemical: pyrrolopyrazines
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: indazole; Chemical: pyrrolopyrazines