You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [5-(2-amino-5-fluoro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-7-yl)oxolan-2-yl]methoxy-trihydroxyphosphanium;methanol into its molecular formula.
user
C13H23FN4O8P+
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