You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1R,2R,4S)-2-bicyclo[2.2.1]heptanyl]-3-chloro-4-(methanesulfonamido)benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H19ClN2O3S
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