3290
Rat microsomal incubations and analyses by liquid chromatography - mass spectrometry ( LC - MS ) identified seven metabolites , characterized as O - deethyl , hydroxyl , and N - deethyl derivatives of nonradioactive DPA - 714 , two of them having the same retention times than those detected in rat and baboon plasma .
 Chemical: O - deethyl; Chemical: hydroxyl; Chemical: N - deethyl; Chemical: DPA - 714
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: O - deethyl; Chemical: hydroxyl; Chemical: N - deethyl; Chemical: DPA - 714