16487
The authors hypothesized that ester taggants added to vaginal gels would generate exhaled alcohol and ketone metabolites and provide a " breath test " for vaginal gel use .
 Chemical: ester; Chemical: alcohol; Chemical: ketone
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: ester; Chemical: alcohol; Chemical: ketone