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system
Name the molecular formula for the molecule established as 20-[[(1S)-1-carboxy-4-[2-[2-[2-[2-[2-(carboxymethoxy)ethoxy]ethylamino]-2-oxoethoxy]ethoxy]ethylamino]-4-oxobutyl]amino]-20-oxoicosanoic acid using the IUPAC nomenclature.
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C37H67N3O13
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