You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
15-phenyl-24-(3-triphenylen-2-ylphenyl)-4-oxa-15,24-diazaheptacyclo[14.11.0.02,14.03,11.05,10.017,25.018,23]heptacosa-1(16),2(14),3(11),5,7,9,12,17(25),18,20,22,26-dodecaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C54H32N2O
assistant