You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(2-chloro-6-fluorophenyl)-N-[2-fluoro-5-(tetrazol-1-yl)phenyl]-5-methyl-1,2-oxazole-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H11ClF2N6O2
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