The term exponential return is identified in base64 scheme by the sequence ZXhwb25lbnRpYWwgcmV0dXJu, while the MD5 signature is equal to ba9479c4503663b7e4fd95ec73d878f3. The ASCII encoding of exponential return in hexadecimal notation is 6578706f6e656e7469616c2072657475726e.