You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(17,18-difluoro-3-thiatetracyclo[12.4.0.02,6.07,12]octadeca-1(14),2(6),4,7,9,11,15,17-octaen-13-yl)-11-(prop-1-en-2-yloxymethoxy)-5-oxa-1,2,8-triazatricyclo[8.4.0.03,8]tetradeca-10,13-diene-9,12-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H25F2N3O5S
assistant