2050
Involvement of interleukin - 6 - regulated nitric oxide synthase in hemorrhagic cystitis and impaired bladder contractions in young rats induced by acrolein , a urinary metabolite of cyclophosphamide .
 Chemical: nitric oxide; Chemical: acrolein; Chemical: cyclophosphamide
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: nitric oxide; Chemical: acrolein; Chemical: cyclophosphamide