27736
Cyclic tetrapeptides are an important class of biologically active molecules that exhibit interesting conformational dynamics , with slow interconversion of several different structures .
 Chemical: Cyclic tetrapeptides
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: Cyclic tetrapeptides 
Answer:
 Chemical: Cyclic tetrapeptides