The term stationery seller is identified in base64 scheme by the sequence c3RhdGlvbmVyeSBzZWxsZXI=, while the MD5 signature is equal to 5ddedda2747ccfd421343cb9f909f859. The ASCII encoding of stationery seller in hexadecimal notation is 73746174696f6e6572792073656c6c6572.