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 N-(2,4-dimethoxyphenyl)-2-[8-(2-methylpropyl)-7,12-dioxo-5-thia-1,8,10,11-tetrazatricyclo[7.3.0.02,6]dodeca-2(6),3,9-trien-11-yl]acetamide is given. What is its corresponding molecular formula?
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C21H23N5O5S
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