The term principal investigator is identified in base64 scheme by the sequence cHJpbmNpcGFsIGludmVzdGlnYXRvcg==, while the MD5 signature is equal to e053d8f2b0866fce4e5fd76d1fe1ce5f. The ASCII encoding of principal investigator in hexadecimal notation is 7072696e636970616c20696e76657374696761746f72.