26179
Dodecanitrile and 2 , 2 , 3 - trimethylcyclopent - 3 - enylacetonitrile were negative in the in - vitro chromosome aberration test and in - vitro micronucleus test , respectively .
 Chemical: Dodecanitrile; Chemical: 2 , 2 , 3 - trimethylcyclopent - 3 - enylacetonitrile
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: Dodecanitrile; Chemical: 2 , 2 , 3 - trimethylcyclopent - 3 - enylacetonitrile