13800
The stereoisomer ( + ) - naloxone potentiates G - protein coupling and feeding associated with stimulation of mu opioid receptors in the parabrachial nucleus .
 Chemical: ( + ) - naloxone
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: ( + ) - naloxone