You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-[6-[(1S,4S)-2-azabicyclo[2.2.1]heptan-2-yl]pyridin-3-yl]-3-(methoxymethyl)-1,2,4-oxadiazole by IUPAC nomenclature, provide its molecular formula.
user
C15H18N4O2
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