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Arrhythmia parameters were evaluated by ECG and the content of bufadienolides in heart were measured by ultra - performance liquid chromatography tandem mass spectrometry ( UPLC - MS ) .
 Chemical: bufadienolides
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: bufadienolides