The term four-dimensional is identified in base64 scheme by the sequence Zm91ci1kaW1lbnNpb25hbA==, while the MD5 signature is equal to 64c9f24d18cf4c7a6279941d8fdd0fe8. The ASCII encoding of four-dimensional in hexadecimal notation is 666f75722d64696d656e73696f6e616c.