11968
Asymmetric synthesis and anti - protozoal activity of the 8 , 4 ' - oxyneolignans virolin , surinamensin and analogues .
 Chemical: 8 , 4 ' - oxyneolignans; Chemical: virolin; Chemical: surinamensin
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: 8 , 4 ' - oxyneolignans; Chemical: virolin; Chemical: surinamensin