The term ventilating system is identified in base64 scheme by the sequence dmVudGlsYXRpbmcgc3lzdGVt, while the MD5 signature is equal to 7fd00fa227609b06a0cf13f25d937254. The ASCII encoding of ventilating system in hexadecimal notation is 76656e74696c6174696e672073797374656d.