You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-methyl-N-[2-[methyl-[[3-[6-[methyl(2-methylpropyl)amino]pyridin-3-yl]-1-(oxan-2-yl)pyrazol-4-yl]methyl]amino]ethyl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H46N6O3
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