You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-amino-3-chloro-6-[4-chloro-3-(difluoromethyl)-2,6-difluorophenyl]pyridin-2-yl] hydrogen carbonate is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H6Cl2F4N2O3
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