The term unperceptiveness is identified in base64 scheme by the sequence dW5wZXJjZXB0aXZlbmVzcw==, while the MD5 signature is equal to f3a41bdfa5a071b2a5e9c3e411b31084. The ASCII encoding of unperceptiveness in hexadecimal notation is 756e706572636570746976656e657373.