You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 3-(2,4-dichlorophenyl)-7-(3,5-dimethyl-1,2,4-triazol-1-yl)-6-ethyl-2-methylpyrazolo[5,1-b][1,3]oxazole is given. What is its corresponding molecular formula?
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C18H17Cl2N5O
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