Propose a detailed,step-by-step mechanism for the reaction pathway shown below. 
Definitions:
Form 1065
An IRS tax form used by partnerships in the United States to report their income, gains, losses, deductions, and credits to the IRS.
Partnership
A legal form of business operation between two or more individuals who share management and profits.
Form 1120S
A U.S. tax form used by S corporations to report their income, losses, dividends, and other financial information to the IRS.
Service Company
A business that earns revenue through providing services as opposed to selling physical goods.
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