You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[[2-(2-amino-6-methylidene-1H-purin-9-yl)ethoxymethyl-[(3-fluoro-4-methylphenyl)methoxy]phosphoryl]oxymethyl]-5-phenyl-1,3-dioxol-2-one by IUPAC nomenclature, provide its molecular formula.
user
C27H27FN5O7P
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