13804
Previously we reported that infusion of the mu - opioid receptor agonist [ D - Ala2 , N - Me - Phe4 , Glycinol5 ] - Enkephalin ( DAMGO ) into the mu - opioid receptor expressing lateral parabrachial nucleus increases feeding .
 Chemical: [ D - Ala2 , N - Me - Phe4 , Glycinol5 ] - Enkephalin; Chemical: DAMGO
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: [ D - Ala2 , N - Me - Phe4 , Glycinol5 ] - Enkephalin; Chemical: DAMGO