Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates. 
Definitions:
Weak Form Efficient
A market efficiency theory stating that all past trading information is already reflected in stock prices, and that technical analysis cannot consistently produce excess returns.
Investment Risk
The possibility of losing some or all of an investment's value due to various factors including market volatility, economic conditions, or company performance.
Historical Return
The return that an investment has generated over a specified period of time in the past.
Investment Portfolio
A collection of investments held by an individual or institution, including stocks, bonds, real estate, and other assets.
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