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 13-(4-fluorophenyl)-2-methyl-15-(trifluoromethyl)-4,7,11,12-tetraza-1-azoniatetracyclo[7.7.0.02,7.011,16]hexadeca-1(16),9,12,14-tetraen-8-one .
user
C19H16F4N5O+
assistant