You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2,3-dimethyl-2-aza-3-azoniabicyclo[3.1.0]hexa-1(5),3-dien-4-yl)-(1,2-dimethyl-2,3-dihydroindol-5-yl)diazene .
user
C16H20N5+
assistant