10546
In addition , derivatives of caffeic acid and sinapic acid efficiently inhibited tyrosinase activity and reduced melanin content in melanocytes Mel - Ab cell .
 Chemical: caffeic acid; Chemical: sinapic acid
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: caffeic acid; Chemical: sinapic acid