21770
Identification of the odour - active cyclic diketone cis - 2 , 6 - dimethyl - 1 , 4 - cyclohexanedione in roasted Arabica coffee brew .
 Chemical: cis - 2 , 6 - dimethyl - 1 , 4 - cyclohexanedione
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: cis - 2 , 6 - dimethyl - 1 , 4 - cyclohexanedione