You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-ethylbutanoyloxymethyl (3R)-2-hydroxy-3-(4,4,4-trifluorobutanoylamino)-3,4-dihydro-1,2-benzoxaborinine-8-carboxylate into its molecular formula.
user
C20H25BF3NO7
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