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The fatty acid amide hydrolase inhibitor , URB597 , promotes retinal ganglion cell neuroprotection in a rat model of optic nerve axotomy .
 Chemical: fatty acid amide; Chemical: URB597; Chemical: retinal
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: fatty acid amide; Chemical: URB597; Chemical: retinal