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 S-(1-phenyltetrazol-5-yl) 3-(2-chlorophenyl)-5-methyl-1,2-oxazole-4-carbothioate is given. What is its corresponding molecular formula?
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C18H12ClN5O2S
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