3823
The present study tested the hypothesis that administration of the pure isomer dexmethylphenidate ( d - MPH ) will overcome the influence of ethanol on d - MPH absorption by eliminating competitive CES1 - mediated presystemic metabolism of l - MPH to l - EPH .
 Chemical: dexmethylphenidate; Chemical: d - MPH; Chemical: ethanol; Chemical: d - MPH; Chemical: l - MPH; Chemical: l - EPH
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: dexmethylphenidate; Chemical: d - MPH; Chemical: ethanol; Chemical: d - MPH; Chemical: l - MPH; Chemical: l - EPH