2685
1 . Metabolic disposition of ( 14 ) C - abiraterone acetate ( AA ) , a prodrug of abiraterone was assessed in a phase I , open - label , single - dose ( 1000 mg , approximately 100 mu Ci ) study in healthy males ( 18 - 55 years , N = 8 ) .
 Chemical: ( 14 ) C - abiraterone acetate; Chemical: abiraterone
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: ( 14 ) C - abiraterone acetate; Chemical: abiraterone