You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N,N-dimethyl-3-[(2S)-4-[(1-methylbenzimidazol-2-yl)methyl]morpholin-2-yl]pyrazin-2-amine into its molecular formula.
user
C19H24N6O
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