You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(2-chlorophenyl)-N-[2-[[2-(4-fluorophenyl)-1H-indol-3-yl]sulfanyl]ethyl]-5-methyl-1,2-oxazole-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H21ClFN3O2S
assistant