11453
In the preceding letter , we detailed the discovery of clinical candidate PF - 04693627 , a potent mPGES - 1 inhibitor possessing a novel benzoxazole structure .
 Chemical: PF - 04693627; Chemical: benzoxazole
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: PF - 04693627, benzoxazole 
Answer:
 Chemical: PF - 04693627; Chemical: benzoxazole