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We report here the design and synthesis of a series of 4 - anilinoquinazoline derivatives , of which 7 compounds were crystallographically characterized , as epidermal growth factor receptor ( EGFR ) inhibitors by modifications on the aniline ring or at the 6 - alkoxy site of the 6 , 7 - dimethoxy - 4 - anilinoquinazoline pharmacophore .
 Chemical: 4 - anilinoquinazoline; Chemical: aniline; Chemical: 6 - alkoxy; Chemical: 6 , 7 - dimethoxy - 4 - anilinoquinazoline
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: 4 - anilinoquinazoline; Chemical: aniline; Chemical: 6 - alkoxy; Chemical: 6 , 7 - dimethoxy - 4 - anilinoquinazoline