5541
The local structure and dynamic behaviour of a benzene molecular assembly confined within the nano - cavities of a zinc - based metal - organic framework , [ Zn ( 4 ) O ( CO ( 2 ) C ( 6 ) H ( 4 ) CO ( 2 ) ) ( 3 ) ] ( n ) ( IRMOF - 1 ) , were investigated by means of molecular dynamics ( MD ) simulations .
 Chemical: benzene; Chemical: zinc; Chemical: [ Zn ( 4 ) O ( CO ( 2 ) C ( 6 ) H ( 4 ) CO ( 2 ) ) ( 3 ) ] ( n ); Chemical: IRMOF - 1
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: benzene; Chemical: zinc; Chemical: [ Zn ( 4 ) O ( CO ( 2 ) C ( 6 ) H ( 4 ) CO ( 2 ) ) ( 3 ) ] ( n ); Chemical: IRMOF - 1