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A urinary metabonomic approach based on ultraperformance liquid chromatography coupled with mass spectrometry ( UPLC - MS ) was developed to study the metabolic disturbances caused by the administration of Genkwa Flos ( GF ) to rats .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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