You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-(3-azabicyclo[3.1.0]hexan-3-ylmethyl)-6-methanidyl-5,6,7,8-tetrahydro-1,6-naphthyridin-6-ium ?
user
C15H21N3
assistant