The term differential coefficient is identified in base64 scheme by the sequence ZGlmZmVyZW50aWFsIGNvZWZmaWNpZW50, while the MD5 signature is equal to 3951e766f02b436e92ecb0faa4d5ac39. The ASCII encoding of differential coefficient in hexadecimal notation is 646966666572656e7469616c20636f656666696369656e74.