You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[2-[(2Z)-2-butan-2-ylidenehydrazinyl]-5,7-dimethyl-1,3-benzothiazol-6-yl]-2,2-dimethylpropanamide into molecular formula.
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C18H26N4OS
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