You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 5-amino-4-hydroxy-7-(trioxidanylsulfanyl)-6-[[4-[2-(trioxidanylsulfanyloxy)ethylsulfonyl]phenyl]diazenyl]naphthalene-2-sulfonic acid into molecular formula.
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C18H17N3O13S4
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