Since that address is not transaction-specific and appears to receive 5BTC donations from time to time, I will distinguish my send by using the amount 5.20288651 BTC.  This amount is derived from the shasum of my username:


  $ (echo 16i; (echo -n eldentyrell | shasum | tr a-z A-Z | cut -b1-8); echo f) | dc
  202886511