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 14,14-dimethyl-9-azahexacyclo[11.11.0.02,10.03,8.015,24.016,21]tetracosa-1(13),2(10),3,5,7,11,15(24),16(21),17,22-decaene ?
user
C25H21N
assistant