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A 90 - day oral ( dietary ) toxicity study of arruva , an R , R - monatin salt isomer , in Crl : CD - 1 ( ICR ) mice .
 Chemical: arruva; Chemical: R , R - monatin
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: arruva; Chemical: R , R - monatin