17824
A larger area under the curve of the major metabolite 1 ' - hydroxymidazolam ( 1 . 7 - fold ) was obtained with thalidomide because of the heterotropic cooperativity of human P450 3A enzymes .
 Chemical: 1 ' - hydroxymidazolam; Chemical: thalidomide
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: 1 ' - hydroxymidazolam, thalidomide 
Answer:
 Chemical: 1 ' - hydroxymidazolam; Chemical: thalidomide