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Moreover , the active permethylated vancomycin aglycon derivatives examined exhibit VanB VRE antimicrobial activity at levels that approach ( typically within 2 - fold ) their activity against sensitive bacteria .
 Chemical: vancomycin; Chemical: VanB
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: vancomycin; Chemical: VanB