10543
Here , various hydroxycinnamic acid ( HCA ) derivatives were further conjugated with phenylalanyl hydroxamic acid and prolyl hydroxamic acid ( HCA - Phe - NHOH and HCA - Pro - NHOH ) to study the structure and activity relationship as both antioxidants and tyrosinase inhibitors .
 Chemical: hydroxycinnamic acid; Chemical: HCA; Chemical: phenylalanyl hydroxamic acid; Chemical: prolyl hydroxamic acid; Chemical: HCA - Phe - NHOH; Chemical: HCA - Pro - NHOH
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: hydroxycinnamic acid; Chemical: HCA; Chemical: phenylalanyl hydroxamic acid; Chemical: prolyl hydroxamic acid; Chemical: HCA - Phe - NHOH; Chemical: HCA - Pro - NHOH