12589
Furthermore , the structure - activity relationship of a bis ( aryl ) ether C - terminal capping group mimicking dipeptide interactions was probed through ring substitutions , allowing increased complementarity with the primary hydrophobic pocket .
 Chemical: bis ( aryl ) ether; Chemical: C; Chemical: dipeptide
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: bis ( aryl ) ether; Chemical: C; Chemical: dipeptide