5511
Films of ethyl cellulose ( EC ) and water - soluble hydroxypropyl cellulose ( HPC ) can be used for extended release coatings in oral formulations .
 Chemical: ethyl; Chemical: hydroxypropyl
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: ethyl; Chemical: hydroxypropyl