8909
However , clusters or giant aggregates of nanowhiskers lacking any specific shape are observed in the 1 % C ( 12 ) G ( 2 ) / butanol system although these crystals exhibit hexagonal close - packed structures .
 Chemical: C ( 12 ) G ( 2 )
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: C ( 12 ) G ( 2 )