5413
Phosphorylation of dopamine transporter serine 7 modulates cocaine analog binding .
 Chemical: dopamine; Chemical: serine; Chemical: cocaine
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: dopamine; Chemical: serine; Chemical: cocaine