5660
We recently reported that levulinate ( 4 - ketopentanoate ) is converted in the liver to 4 - hydroxypentanoate , a drug of abuse , and that the formation of 4 - hydroxypentanoate is stimulated by ethanol oxidation .
 Chemical: levulinate; Chemical: 4 - ketopentanoate; Chemical: 4 - hydroxypentanoate; Chemical: 4 - hydroxypentanoate; Chemical: ethanol
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: levulinate; Chemical: 4 - ketopentanoate; Chemical: 4 - hydroxypentanoate; Chemical: 4 - hydroxypentanoate; Chemical: ethanol