You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-(4-chlorophenyl)-1,3-thiazol-4-yl]methyl]-5-(3-fluorophenyl)-1,3,4-oxadiazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H11ClFN3OS
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