16674
Extrudates were characterized for their tensile strength , Young ' s modulus of elasticity , water absorption , gel forming capacity , and release of two model drugs , coumarin ( COU ) and propranolol hydrochloride ( PRO ) .
 Chemical: coumarin; Chemical: COU; Chemical: propranolol hydrochloride; Chemical: PRO
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: coumarin; Chemical: COU; Chemical: propranolol hydrochloride; Chemical: PRO