21823
In further anti - inflammatory research , thienopyridine derivative 1a showed potent inhibition of nitric oxide ( NO ) production .
 Chemical: thienopyridine; Chemical: nitric oxide; Chemical: NO
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: thienopyridine, nitric oxide, NO 
Answer:
 Chemical: thienopyridine; Chemical: nitric oxide; Chemical: NO