You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
14-phenyl-18-[3-(9-phenyl-1,10-phenanthrolin-2-yl)phenyl]-9-thia-15-azapentacyclo[11.8.0.02,10.03,8.016,21]henicosa-1(13),2(10),3,5,7,11,14,16(21),17,19-decaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C49H29N3S
assistant