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 8-[2-(aminomethyl)azetidin-1-yl]-1-cyclopropyl-7-fluoro-9-methyl-4-oxoquinolizine-3-carboxylic acid .
user
C18H20FN3O3
assistant