You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2R,3R,4S,5R)-2-[3-(1H-indol-3-ylamino)-5-phenyl-4H-pyrrolo[2,3-d]pyrimidin-7-yl]-5-methyloxolane-3,4-diol by IUPAC nomenclature, provide its molecular formula.
user
C25H25N5O3
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