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In this study , we report the selective acylation of BFA under mild conditions and the preparation of a series of monoacylated and diacylated BFA derivatives .
 BFA, monoacylated and diacylated BFA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 BFA, monoacylated and diacylated BFA