3217
Chronic exposure to the anabolic androgenic steroids ( AAS ) nandrolone decanoate ( ND ) in supra - physiological doses is associated with learning and memory impairments .
 Chemical: steroids; Chemical: nandrolone decanoate
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: steroids; Chemical: nandrolone decanoate