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system
Provide the molecular formula for the IUPAC named substance ethyl (2E,5R)-2-[(3-chloro-4-hydroxy-5-methoxyphenyl)methylidene]-7-methyl-3-oxo-5-(2-propan-2-yloxyphenyl)-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate .
user
C27H27ClN2O6S
assistant