You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-2-[[6-(imidazol-1-ylmethyl)-2-phenyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl]amino]spiro[2.5]octan-6-ol by IUPAC nomenclature, provide its molecular formula.
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C24H26N6O
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