The term natural logarithm is identified in base64 scheme by the sequence bmF0dXJhbCBsb2dhcml0aG0=, while the MD5 signature is equal to 48950aa3394f1a3e2967c9e389511bc8. The ASCII encoding of natural logarithm in hexadecimal notation is 6e61747572616c206c6f6761726974686d.