2604
Basal functioning of the hypothalamic - pituitary - adrenal ( HPA ) axis and psychological distress in recreational ecstasy polydrug users .
 Chemical: ecstasy
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: ecstasy