You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-fluoro-1-[(3S,4R)-4-methoxyoxolan-3-yl]-1-[[4-(1-methylpyrazol-4-yl)phenyl]methyl]indol-1-ium-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C25H26FN4O3+
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