Let's take a look at four "toxic stocks" to sell. Canadian Natural Resources (CNQ - Get Report) is forming a textbook descending triangle setup. It's a sell below $28.50. Magellan Midstream Partners LP (MMP - Get Report) is showing a near-term red flag after violating support at $78. Starbucks Corp. (SBUX - Get Report) is pushing its way lower in a downtrend. Sell the rips. Sasol Ltd. (SSL) is forming a textbook head and shoulders top. It becomes a sell below $28.