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For the molecule named tetrasodium;2-[[4-[4-[[4,6-bis[2-hydroxyethyl(2-sulfonatoethyl)amino]-1,3,5-triazin-2-yl]amino]anilino]-6-[2-hydroxyethyl(2-sulfonatoethyl)amino]-1,3,5-triazin-2-yl]-(2-hydroxyethyl)amino]ethanesulfonate by IUPAC nomenclature, provide its molecular formula.
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C28H42N12Na4O16S4
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