20046
In this paper , we report the design , synthesis , and structure - activity relationship of a group of hybrid molecules in which the pocket - binding domain segment of the C34 peptide was replaced with NB - 2 and A12 derivatives .
 Chemical: NB - 2; Chemical: A12
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: NB - 2, A12 
Answer:
 Chemical: NB - 2; Chemical: A12