You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[3-bromo-4-[(2-chlorophenyl)methoxy]-5-ethoxyphenyl]methyl]-1-pyridin-3-ylmethanamine;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H23BrCl2N2O2
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