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Radiosynthesis and evaluation of [ (1) (1) C - carbonyl ] - labeled carbamates as fatty acid amide hydrolase radiotracers for positron emission tomography .
 Chemical: (1) (1) C - carbonyl; Chemical: carbamates; Chemical: fatty acid; Chemical: amide
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: (1) (1) C - carbonyl; Chemical: carbamates; Chemical: fatty acid; Chemical: amide