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system
Provide the molecular formula for the IUPAC named substance 2-[[4-[(6-anilino-1-hydroxy-3-sulfonaphthalen-2-yl)diazenyl]-6-sulfonaphthalen-1-yl]diazenyl]-5-methylbenzene-1,4-disulfonic acid .
user
C33H25N5O13S4
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