The term cartesian coordinate system is identified in base64 scheme by the sequence Y2FydGVzaWFuIGNvb3JkaW5hdGUgc3lzdGVt, while the MD5 signature is equal to e2c7c1d4710888351e28f9ffcc541417. The ASCII encoding of cartesian coordinate system in hexadecimal notation is 63617274657369616e20636f6f7264696e6174652073797374656d.