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The hemodynamic effects of captopril and other angiotensin - converting enzyme inhibitors may be mediated by the endogenous opioid system .
 Chemical: captopril; Chemical: angiotensin - converting enzyme inhibitors
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: captopril; Chemical: angiotensin - converting enzyme inhibitors