You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (3R)-N-(7-methyl-[1,3]thiazolo[4,5-g][1,3]benzothiazol-2-yl)-2,3-dihydro-1,4-benzodioxine-3-carboxamide into molecular formula.
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C18H13N3O3S2
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