4325
These results suggested that new synthetic 3 , 4 , 5 - trimethoxycinnamic acid derivatives have a potential antinarcotic effect through acting as a 5 - HT ( 1A ) receptor agonist in mice .
 Chemical: 3 , 4 , 5 - trimethoxycinnamic acid
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: 3 , 4 , 5 - trimethoxycinnamic acid 
Answer:
 Chemical: 3 , 4 , 5 - trimethoxycinnamic acid