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 18-naphthalen-2-yl-15-(4-phenyl-7,8-dihydroquinazolin-2-yl)-12-oxa-15,18-diazaheptacyclo[14.11.0.02,14.05,13.06,11.017,25.019,24]heptacosa-1(16),2(14),3,5(13),6,8,10,17(25),19,21,23,26-dodecaene ?
user
C48H30N4O
assistant