You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-[2-[(N'-cyano-N,N-dimethylcarbamimidoyl)-methylamino]ethoxy]-5-fluorophenyl]-3-pyridin-3-ylurea is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H22FN7O2
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