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Aphrodisiac activity may be due to an increase in the production or effect of androgens , so this study sought to evaluate the androgenic and spermatogenic potential of the alkylamide - rich ethanol solution extract .
 Chemical: androgens; Chemical: alkylamide; Chemical: ethanol
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: androgens; Chemical: alkylamide; Chemical: ethanol