The term guttural consonant is identified in base64 scheme by the sequence Z3V0dHVyYWwgY29uc29uYW50, while the MD5 signature is equal to 65f15e545cd2ec26ff9b0dc1768d97e5. The ASCII encoding of guttural consonant in hexadecimal notation is 677574747572616c20636f6e736f6e616e74.