21286
Their structures were established by their spectroscopic data and by comparing with those of azalomycins F3a , F4a and F5a .
 Chemical: azalomycins F3a , F4a and F5a
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: azalomycins F3a , F4a and F5a 
Answer:
 Chemical: azalomycins F3a , F4a and F5a