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Structures of uracil derivatives along with their abbreviated names: uracil-5-yl O-sulfamate (SU), 5-thiocyanatouracil (SCNU), and 5-bromouracil (BrU). Arrows indicate bonds possible to break during DEA process. Two DEA possible paths are marked: path A (the bond cleavage between uracil and its substituent) and path B (the bond cleavage within the substituent).
