17335
The analytical results clarified that the mono - thiol adduct of methyl caffeate and the mono - and di - thiol adducts of methyl dihydrocaffeate contributed to the synergism in the antioxidant activity of both caffeates .
 Chemical: thiol; Chemical: methyl caffeate; Chemical: thiol; Chemical: methyl dihydrocaffeate; Chemical: caffeates
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: thiol, methyl caffeate, thiol, methyl dihydrocaffeate, caffeates 
Answer:
 Chemical: thiol; Chemical: methyl caffeate; Chemical: thiol; Chemical: methyl dihydrocaffeate; Chemical: caffeates