24088
We focused on substituents made at the indole N ( 1 ) - , 2 - and 5 - positions and these were found to not only influence the affinity at 5 - HT6 receptors but also the intrinsic activity leading to antagonists , partial agonists and full agonists .
 Chemical: indole
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: indole