The term simple closed curve is identified in base64 scheme by the sequence c2ltcGxlIGNsb3NlZCBjdXJ2ZQ==, while the MD5 signature is equal to f6d24e08d432d58856a0d1d663cb8519. The ASCII encoding of simple closed curve in hexadecimal notation is 73696d706c6520636c6f736564206375727665.