21777
Further , we demonstrated that 2 - hydroxy - 3 - pentanone and 1 - hydroxy - 2 - propanone , thermal degradation products of monosaccharides , were closely related to the formation of cis - 2 , 6 - dimethyl - 1 , 4 - cyclohexanedione .
 Chemical: 2 - hydroxy - 3 - pentanone; Chemical: 1 - hydroxy - 2 - propanone; Chemical: monosaccharides; 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: 2 - hydroxy - 3 - pentanone; Chemical: 1 - hydroxy - 2 - propanone; Chemical: monosaccharides; Chemical: cis - 2 , 6 - dimethyl - 1 , 4 - cyclohexanedione