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Incubation of luotonin A with pooled human liver microsomes in the presence of NADPH - generating system resulted in the formation of four metabolites and the structures of each metabolite were tentatively characterized on the basis of electrospray tandem mass spectra .
 Chemical: luotonin A; Chemical: NADPH
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: luotonin A; Chemical: NADPH