18057
3 and 4 exhibited antitubercular activity ( MIC = 100 and 25 mu g / ml ) against Mycobacterium tuberculosis H37Rv in BACTEC - 460 assay .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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