The term essential amino acid is identified in base64 scheme by the sequence ZXNzZW50aWFsIGFtaW5vIGFjaWQ=, while the MD5 signature is equal to ff64cfddebe162ed47febad69f372e3f. The ASCII encoding of essential amino acid in hexadecimal notation is 657373656e7469616c20616d696e6f2061636964.