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system
Name the molecular formula for the molecule established as (E)-4-(1,4,8-trihydroxy-3-methylnaphthalen-2-yl)-N-[3-[4-[3-[[(E)-4-(1,4,8-trihydroxy-3-methylnaphthalen-2-yl)but-3-enoyl]amino]propyl]piperazin-1-yl]propyl]but-3-enamide using the IUPAC nomenclature.
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C40H48N4O8
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