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system
Name the molecular formula for the molecule established as 5-amino-6-[(4-oxocyclohexa-2,5-dien-1-ylidene)methyl]-2-(2-oxo-2-pyrrolidin-1-ylethyl)-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one using the IUPAC nomenclature.
user
C18H17N5O3S
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