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 [[4-benzoyl-2-(methoxycarbonylcarbamothioylamino)phenyl]-thiophen-2-ylmethylidene]azanium is given. What is its corresponding molecular formula?
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C21H18N3O3S2+
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