The term exclamation point is identified in base64 scheme by the sequence ZXhjbGFtYXRpb24gcG9pbnQ=, while the MD5 signature is equal to 20b4b7e8b3a8f62877a3032afc06475d. The ASCII encoding of exclamation point in hexadecimal notation is 6578636c616d6174696f6e20706f696e74.