You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [(8aS)-8a-methyl-2,3,4,6,7,8-hexahydro-1H-pyrrolo[1,2-a]pyrazin-3-yl]methanol;dihydrochloride .
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C9H20Cl2N2O
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