You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(oxetan-3-yloxy)-5-[4-[4-[4-(oxetan-3-yl)piperazin-1-yl]anilino]pyrimidin-2-yl]benzonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H28N6O3
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