9945
This new agent , when labeled with ( 123 ) I , may be a useful imaging agent for mapping SERT binding sites in the human brain .
 Chemical: ( 123 ) I
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: ( 123 ) I 
Answer:
 Chemical: ( 123 ) I