The term systeme international d'unites is identified in base64 scheme by the sequence c3lzdGVtZSBpbnRlcm5hdGlvbmFsIGQndW5pdGVz, while the MD5 signature is equal to 3f1c71da7c60eff2dce95eb0e183fd4f. The ASCII encoding of systeme international d'unites in hexadecimal notation is 73797374656d6520696e7465726e6174696f6e616c206427756e69746573.