11969
The asymmetric synthesis of 8 , 4 ' - oxyneolignans ( - ) - virolin , ( - ) - surinamensin and a number of analogues has been achieved .
 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