30335
Structure - Activity Relationships of Quinoxaline - Based 5 - HT3 A and 5 - HT3 AB Receptor - Selective Ligands .
 Chemical: Quinoxaline
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Quinoxaline 
Answer:
 Chemical: Quinoxaline