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system
Name the molecular formula for the molecule established as (3S)-3-[5-[2-[3,5-bis[4-[[2-[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]propanoylamino]acetyl]amino]butyl]phenyl]ethynyl]pyridin-3-yl]-3-[[(3R)-1-(3-piperidin-4-ylpropanoyl)piperidine-3-carbonyl]amino]propanoic acid using the IUPAC nomenclature.
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C76H116N16O20
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