You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[4-[3-(3-chloropyrido[3,2-b][1,4]benzothiazin-10-yl)-2-methylpropyl]piperazine-1,4-diium-1-yl]ethanol;dichloride ?
user
C21H29Cl3N4OS
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