The term interchangeability is identified in base64 scheme by the sequence aW50ZXJjaGFuZ2VhYmlsaXR5, while the MD5 signature is equal to e2f28a4f21e3efeba57c3fc3d56c16a8. The ASCII encoding of interchangeability in hexadecimal notation is 696e7465726368616e67656162696c697479.