16498
Using this method , a series of substituted enol esters containing the cyclopentenyl motif were prepared in moderate to high yields .
 Chemical: enol esters; Chemical: cyclopentenyl
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: enol esters; Chemical: cyclopentenyl