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In order to identify potential drug - drug interactions , codeine , fluconazole , ketamine , ketoconazole , methadone , morphine , valproic acid , and zidovudine were screened as inhibitors of R - and S - lorazepam glucuronidation by HLM .
 Chemical: codeine; Chemical: fluconazole; Chemical: ketamine; Chemical: ketoconazole; Chemical: methadone; Chemical: morphine; Chemical: valproic acid; Chemical: zidovudine; Chemical: R - and S - lorazepam
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: codeine; Chemical: fluconazole; Chemical: ketamine; Chemical: ketoconazole; Chemical: methadone; Chemical: morphine; Chemical: valproic acid; Chemical: zidovudine; Chemical: R - and S - lorazepam