11882
N - Acyl 4 - ( 5 - pyrimidine - 2 , 4 - dionyl ) phenylalanine derivatives of type 4 were designed to replace the 2 , 6 - dichlorobenzoylamine portion of compound 1 in order to identify novel compounds with improved potency against alpha 4 - integrins .
 Chemical: N - Acyl 4 - ( 5 - pyrimidine - 2 , 4 - dionyl ) phenylalanine; Chemical: 2 , 6 - dichlorobenzoylamine
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: N - Acyl 4 - ( 5 - pyrimidine - 2 , 4 - dionyl ) phenylalanine; Chemical: 2 , 6 - dichlorobenzoylamine