You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclopropyl-6-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-2-phenylpyrimidin-4-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H24N4O2
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