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 6-(6-bromo-4-methoxy-6-pentoxycyclohexa-2,4-dien-1-yl)-2-methoxypyridine-3-carbonitrile .
user
C19H23BrN2O3
assistant