15474
The anticarcinogenic activity of hydroxytyrosyl ethyl ether ( HTy - Et ) compared to its precursor hydroxytyrosol ( HTy ) has been studied in human Caco - 2 colon adenocarcinoma cells .
 Chemical: hydroxytyrosyl ethyl ether; Chemical: HTy - Et; Chemical: hydroxytyrosol; Chemical: HTy
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: hydroxytyrosyl ethyl ether; Chemical: HTy - Et; Chemical: hydroxytyrosol; Chemical: HTy