13685
The mixed disulfide conjugates of CPT and NPT showed potent inhibition of platelet aggregation after pretreatment with 1 mM GSH , confirming that the AM is responsible for the antiplatelet activity of clopidogrel .
 disulfide, CPT, NPT, GSH, clopidogrel
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 disulfide, CPT, NPT, GSH, clopidogrel