You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 12-hydroxy-11,11-dimethyl-13-(2-piperidin-1-ylethylamino)-6,10-dioxa-8-thia-3-azatricyclo[7.4.0.02,7]trideca-1(9),2(7)-dien-4-one into molecular formula.
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C18H27N3O4S
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