7791
The series consisted of 3 - ( benzylamino ) - 5 - cyanopyrazine - 2 - carboxamides and 3 - ( benzylamino ) pyrazine - 2 , 5 - dicarbonitriles with various substituents on the phenyl ring .
 Chemical: 3 - ( benzylamino ) - 5 - cyanopyrazine - 2 - carboxamides; Chemical: 3 - ( benzylamino ) pyrazine - 2 , 5 - dicarbonitriles; Chemical: phenyl
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: 3 - ( benzylamino ) - 5 - cyanopyrazine - 2 - carboxamides; Chemical: 3 - ( benzylamino ) pyrazine - 2 , 5 - dicarbonitriles; Chemical: phenyl