You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(5-methoxy-4-methyl-2-propan-2-ylphenoxy)-4-N-pyrazin-2-ylpyrimidine-2,4-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H22N6O2
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