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The aim of the present study was to investigate differences in surface chemistry of commercially available telmisartan ( TMS ) samples in Indian market and to correlate them to the surface molecular environment .
 Chemical: telmisartan; Chemical: TMS
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: telmisartan; Chemical: TMS