The term presenile dementia is identified in base64 scheme by the sequence cHJlc2VuaWxlIGRlbWVudGlh, while the MD5 signature is equal to 191889d15b85cbe388389d3a31567a55. The ASCII encoding of presenile dementia in hexadecimal notation is 70726573656e696c652064656d656e746961.