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DSE was performed with intravenous dobutamine infusion with an incremental doses of 5 , 10 , 20 , 30 , and 40 microg / kg / min every 5 minutes .
 Chemical: dobutamine
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: dobutamine