11335
In this study , we investigated the anti - platelet activity of erythro - ( 7S , 8R ) - 7 - acetoxy - 3 , 4 , 3 ` , 5 ` - tetramethoxy - 8 - O - 4 ` - neolignan ( EATN ) , a neolignan isolated from Myristica fragrans , using human platelets .
 Chemical: erythro - ( 7S , 8R ) - 7 - acetoxy - 3 , 4 , 3 ` , 5 ` - tetramethoxy - 8 - O - 4 ` - neolignan; Chemical: EATN; Chemical: neolignan
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: erythro - ( 7S , 8R ) - 7 - acetoxy - 3 , 4 , 3 ` , 5 ` - tetramethoxy - 8 - O - 4 ` - neolignan, EATN, neolignan 
Answer:
 Chemical: erythro - ( 7S , 8R ) - 7 - acetoxy - 3 , 4 , 3 ` , 5 ` - tetramethoxy - 8 - O - 4 ` - neolignan; Chemical: EATN; Chemical: neolignan