You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[[4-[(4-fluorophenyl)methoxy]-3-methoxyphenyl]methyl]-1-piperidin-4-ylmethanamine;dihydrochloride .
user
C21H29Cl2FN2O2
assistant