The term file name extension is identified in base64 scheme by the sequence ZmlsZSBuYW1lIGV4dGVuc2lvbg==, while the MD5 signature is equal to 8773fa5f6412f1e1f1858c8840c529d1. The ASCII encoding of file name extension in hexadecimal notation is 66696c65206e616d6520657874656e73696f6e.