You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,9S,13S)-10-(cyclopropylmethyl)-1,13-dimethyl-10-azatricyclo[7.3.1.02,7]trideca-2(7),3,5-triene-4-carbonitrile by IUPAC nomenclature, provide its molecular formula.
user
C19H24N2
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