You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-ethyl-13-[2-(1-oxidoquinolin-1-ium-4-yl)oxyethyl]-2,4,9,15-tetrazatricyclo[9.4.0.03,8]pentadeca-1(11),3(8),4,6,12,14-hexaen-10-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H21N5O3
assistant