Basecally_a_Flag

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To prevent industrial espionage, the development team devised their own secret method of communication. By using a custom encoding scheme, they ensured that only insiders could decipher their messages. However, one of their transmissions has been intercepted. Your task is to decode it and reconstruct the flag before it falls into the wrong hands. The flag is basecally in the attachement. To make a complete flag, you must put the result in 1753c{}