The term optical aberration is identified in base64 scheme by the sequence b3B0aWNhbCBhYmVycmF0aW9u, while the MD5 signature is equal to 574e36a4b82f7cfbb3ac11bef44f12b6. The ASCII encoding of optical aberration in hexadecimal notation is 6f70746963616c2061626572726174696f6e.