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Introduction of a ( S ) - 2 - aminoethyl chain on the thiazole nucleus largely enhanced the in vitro antifungal activity , with a selectivity oriented towards non - C . albicans species .
 ( S ) - 2 - aminoethyl, thiazole
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ( S ) - 2 - aminoethyl, thiazole