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What is the molecular formula of the compound with this IUPAC name 3-[(3aR,7aR)-1,3-dioxo-3a,4,7,7a-tetrahydroisoindol-2-yl]-N-(5-ethyl-1,3,4-thiadiazol-2-yl)propanamide ?
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C15H18N4O3S
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