You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 1-[4-(difluoromethoxy)-3-methoxyphenyl]-N-[[2-(imidazol-1-ylmethyl)phenyl]methyl]methanamine using the IUPAC nomenclature.
user
C20H21F2N3O2
assistant