13233
Herein we synthesized a series of novel compounds by bioisosteric replacement of the oxathiazol - 2 - one ring with 3H - 1 , 2 , 4 - dithiazol - 3 - one , and also fifteen 1 , 3 , 4 - oxathiazol - 2 - one molecules in order for potency comparison and structure - activity relationship elucidation since their antibacterial effects on the virulent strains were not evaluated before .
 Chemical: oxathiazol - 2 - one; Chemical: 3H - 1 , 2 , 4 - dithiazol - 3 - one; Chemical: 1 , 3 , 4 - oxathiazol - 2 - one
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: oxathiazol - 2 - one; Chemical: 3H - 1 , 2 , 4 - dithiazol - 3 - one; Chemical: 1 , 3 , 4 - oxathiazol - 2 - one