The term indispensability is identified in base64 scheme by the sequence aW5kaXNwZW5zYWJpbGl0eQ==, while the MD5 signature is equal to 40e94db0aeee23c3a1b30e0166dc5375. The ASCII encoding of indispensability in hexadecimal notation is 696e64697370656e736162696c697479.