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 1-[(5-methoxy-15,17-dioxa-9-azoniahexacyclo[10.9.2.02,7.09,22.014,18.019,23]tricosa-1,3,5,7,9(22),12,14(18),19(23),20-nonaen-6-yl)oxy]butan-2-one;bromide .
user
C25H22BrNO5
assistant