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Two other tetronic acids congeners were identified through HPLC / MS / MS studies , based on fragmentation pattern of ions produced from ionised tetronic acids , and UV light absorptions .
 Chemical: tetronic acids; Chemical: tetronic acids
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: tetronic acids; Chemical: tetronic acids