The term efficiency apartment is identified in base64 scheme by the sequence ZWZmaWNpZW5jeSBhcGFydG1lbnQ=, while the MD5 signature is equal to 6f91b853cbd4e37803b81e55245ed81e. The ASCII encoding of efficiency apartment in hexadecimal notation is 656666696369656e63792061706172746d656e74.