3292
O - deethylation led to a nonradioactive compound and [ ( 18 ) F ] fluoroacetic acid .
 Chemical: O; Chemical: [ ( 18 ) F ] fluoroacetic 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: O, [ ( 18 ) F ] fluoroacetic acid 
Answer:
 Chemical: O; Chemical: [ ( 18 ) F ] fluoroacetic acid