You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (5-methylpyrazin-2-yl)-[(3S)-4-methyl-3-(6-pyridin-3-ylimidazo[1,5-a]pyridin-1-yl)piperazin-1-yl]methanone into its molecular formula.
user
C23H23N7O
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