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 identified by 12-fluoro-17-methyl-9-methylidene-19-nitro-6-phenylmethoxy-6-(trifluoromethyl)-15,22-dioxa-3,4,20-triazatetracyclo[14.3.1.12,5.110,14]docosa-1(19),2,4,10(21),11,13,16(20),17-octaene ?
user
C27H20F4N4O5
assistant