27834
A tetrazole isosteric analogue of clofibric acid ( 1 ) was prepared using a short synthetic route and was characterized by elemental analysis , NMR ( ( 1 ) H , ( 13 ) C ) spectroscopy , and single - crystal X - ray diffraction .
 Chemical: tetrazole; Chemical: clofibric acid; Chemical: ( 1 ) H; Chemical: ( 13 ) C
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: tetrazole, clofibric acid, ( 1 ) H, ( 13 ) C 
Answer:
 Chemical: tetrazole; Chemical: clofibric acid; Chemical: ( 1 ) H; Chemical: ( 13 ) C