The term coefficient of reflection is identified in base64 scheme by the sequence Y29lZmZpY2llbnQgb2YgcmVmbGVjdGlvbg==, while the MD5 signature is equal to dd4a45e4a8296a01be03e2bd866b1831. The ASCII encoding of coefficient of reflection in hexadecimal notation is 636f656666696369656e74206f66207265666c656374696f6e.