The term pneumoencephalogram is identified in base64 scheme by the sequence cG5ldW1vZW5jZXBoYWxvZ3JhbQ==, while the MD5 signature is equal to d30f83ca4da72abaa9e5cc8fcc0c95e4. The ASCII encoding of pneumoencephalogram in hexadecimal notation is 706e65756d6f656e63657068616c6f6772616d.