16562
Additionally , on day 11 of both study periods , 150 mg caffeine ( CYP1A2 ) , 125 mg tolbutamide ( CYP2C9 ) , 20 mg omeprazole ( CYP2C19 ) , 30 mg dextromethorphan - HBr ( CYP2D6 ) , and 2 mg midazolam ( CYP3A4 ) were administered orally .
 Chemical: caffeine; Chemical: tolbutamide; Chemical: omeprazole; Chemical: dextromethorphan - HBr; Chemical: midazolam
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: caffeine; Chemical: tolbutamide; Chemical: omeprazole; Chemical: dextromethorphan - HBr; Chemical: midazolam