The term octadecanoic acid is identified in base64 scheme by the sequence b2N0YWRlY2Fub2ljIGFjaWQ=, while the MD5 signature is equal to 563026db93ad162735dfbe6fe700a6fa. The ASCII encoding of octadecanoic acid in hexadecimal notation is 6f637461646563616e6f69632061636964.