3741
In addition , the region encompassing the N terminus to the S0 - S1 cytosolic loop ( missing in MthK ) is not necessary for ethanol action .
 Chemical: N; 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: N; Chemical: ethanol