You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (3R,16Z)-16-(aminomethylidene)-17-ethylimino-6-fluoro-3,11-dimethyl-2-oxa-11,13,20-triazatetracyclo[16.3.1.04,9.010,14]docosa-1(21),4(9),5,7,10(14),12,18(22),19-octaen-21-amine ?
user
C23H25FN6O
assistant