You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (1S,9aR)-1-[(2-pyrimidin-5-ylimidazol-1-yl)methyl]-2,3,4,6,7,8,9,9a-octahydro-1H-quinolizine .
user
C17H23N5
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