13560
The greatest effect of green tea observed in vitro as well as the protective role presented in the ex vivo study could be attributed to the major content of phenols , but not catechins .
 Chemical: phenols; Chemical: catechins
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: phenols; Chemical: catechins