You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3aR,9aR)-3-[[4-(2,3-dimethylphenyl)piperazin-1-ium-1-yl]methyl]-8a-methyl-5-methylidene-3a,4,4a,6,7,8,9,9a-octahydro-3H-benzo[f][1]benzofuran-2-one;chloride into its molecular formula.
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C27H39ClN2O2
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