You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[4-[(2-methoxy-1,3-dioxan-5-yl)methoxy]pyridin-2-yl]methylsulfinyl]-1H-benzimidazole into molecular formula.
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C19H21N3O5S
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