15897
Rimonabant ( a CB1 receptor antagonist ) did not change the effect of CBG on nitric oxide production , while SR144528 ( a CB2 receptor antagonist ) further increased the inhibitory effect of CBG on nitric oxide production .
 Chemical: Rimonabant; Chemical: CBG; Chemical: nitric oxide; Chemical: SR144528; Chemical: CBG; Chemical: nitric oxide
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: Rimonabant; Chemical: CBG; Chemical: nitric oxide; Chemical: SR144528; Chemical: CBG; Chemical: nitric oxide