The term fenestra of the vestibule is identified in base64 scheme by the sequence ZmVuZXN0cmEgb2YgdGhlIHZlc3RpYnVsZQ==, while the MD5 signature is equal to ec68b38281b0cf2b3310387ec177ea7f. The ASCII encoding of fenestra of the vestibule in hexadecimal notation is 66656e6573747261206f662074686520766573746962756c65.