12869
In order to exploit the 430 - cavity in the active sites of neuraminidases , 22 zanamivir analogs with C - 1 and C - 4 modification were synthesized , and their inhibitory activities against both group - 1 ( H5N1 , H1N1 ) and group - 2 neuraminidases ( H3N2 ) were determined .
 Chemical: zanamivir; Chemical: C; Chemical: 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: zanamivir, C, C 
Answer:
 Chemical: zanamivir; Chemical: C; Chemical: C