1768
Simultaneous measurements of ECG and brachial artery dP / dtejc were performed at each dobutamine level .
 Chemical: dobutamine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: dobutamine 
Answer:
 Chemical: dobutamine