5625
Collectively , these data indicate that PNU - 120596 increases the effective dose range of donepezil in learning / memory - related tasks in young and age - impaired animal models .
 Chemical: PNU - 120596; Chemical: donepezil
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: PNU - 120596; Chemical: donepezil