The term present perfect tense is identified in base64 scheme by the sequence cHJlc2VudCBwZXJmZWN0IHRlbnNl, while the MD5 signature is equal to 704453b20a56f50833cb2bd47b58f760. The ASCII encoding of present perfect tense in hexadecimal notation is 70726573656e7420706572666563742074656e7365.