You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-(6-methyl-2-morpholin-4-ylpyrimidin-4-yl)piperazin-1-yl]-1-(4-methylpiperidin-1-yl)ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H34N6O2
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