17601
Selective COX - 2 inhibitors ( COXib ) belonging to the class of diaryl heterocycles ( e . g . , celecoxib , rofecoxib , etc . ) , are devoid of the undesirable effects due to their capacity to inhibit selectively inducible ( COX - 2 ) , responsible for inflammatory effects but not constitutive cyclooxygenase - 1 ( COX - 1 ) ( COX ) ; responsible for cytoprotective effects on gastric mucosa .
 Chemical: diaryl heterocycles; Chemical: celecoxib; Chemical: rofecoxib
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: diaryl heterocycles; Chemical: celecoxib; Chemical: rofecoxib