18798
The aim of this study was to investigate whether the 1 - point , 4 - h postdose ( R ) - omeprazole hydroxylation index ( HI ) of racemic omeprazole reflects the three CYP2C19 genotype groups in Japanese individuals .
 Chemical: ( R ) - omeprazole; Chemical: racemic omeprazole
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: ( R ) - omeprazole, racemic omeprazole 
Answer:
 Chemical: ( R ) - omeprazole; Chemical: racemic omeprazole