The term sulcus centralis is identified in base64 scheme by the sequence c3VsY3VzIGNlbnRyYWxpcw==, while the MD5 signature is equal to 407c037569205d309a50b065c61a1ebe. The ASCII encoding of sulcus centralis in hexadecimal notation is 73756c6375732063656e7472616c6973.