You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-[3-(20-oxa-9-thiapentacyclo[11.7.0.02,10.03,8.014,19]icosa-1(13),2(10),3(8),4,6,11,14,16,18-nonaen-5-yl)phenyl]phenyl]-4,6-diphenyl-1,3,5-triazine is the IUPAC name of a molecule. Please give its molecular formula.
user
C45H27N3OS
assistant