You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 16,19-bis(4-fluorophenyl)-15-thiapentacyclo[6.6.5.01,18.02,7.09,14]nonadeca-2,4,6,9,11,13,16,18-octaene .
user
C30H18F2S
assistant