The term survival of the fittest is identified in base64 scheme by the sequence c3Vydml2YWwgb2YgdGhlIGZpdHRlc3Q=, while the MD5 signature is equal to 0138c4102d4fa5cf2bfa5a019b2d3d81. The ASCII encoding of survival of the fittest in hexadecimal notation is 737572766976616c206f66207468652066697474657374.