The term hydroxytetracycline is identified in base64 scheme by the sequence aHlkcm94eXRldHJhY3ljbGluZQ==, while the MD5 signature is equal to fd01db6a573395da2d84c1fe86e185af. The ASCII encoding of hydroxytetracycline in hexadecimal notation is 687964726f787974657472616379636c696e65.