You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name methyl (6R)-6-methyl-2-[(4-methylpiperazin-4-ium-1-yl)carbamothioylamino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate into its molecular formula.
user
C17H27N4O2S2+
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