10860
We found that only the presence of a polyphenolic moiety anchored to the beta - lactam ring ensured an adequate antioxidant potency .
 Chemical: polyphenolic; Chemical: beta - lactam
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: polyphenolic; Chemical: beta - lactam