1418
The displacing of the phenyl at 4 - position with pyridinyl dramatically reduces the activity of the quinazoline pharmacophore , the resulting derivative ( 10 ) being the least active compound .
 Chemical: phenyl; Chemical: pyridinyl; Chemical: quinazoline
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: phenyl; Chemical: pyridinyl; Chemical: quinazoline