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These requirements limit BNCT availability with the latter pharmaceutical issue related to the extremely short shelf - life and clinical acceptability of the current fructose based L - boronphenylalanine ( BPA ) formulation .
 Chemical: fructose; Chemical: L - boronphenylalanine; Chemical: BPA
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: fructose; Chemical: L - boronphenylalanine; Chemical: BPA