The following compound isolated from a marine sponge has been found to have anti-tubercular activity (Tet. Lett. 2007, 8851). Show how it may be constructed by an aldol reaction by drawing a structure of the starting material. 
Definitions:
Group Polarization
The tendency for a group to make decisions that are more extreme than the initial inclination of its members after discussing an issue.
Health Care
The organized provision of medical services to individuals or communities to maintain or improve health.
Communication
The exchange of information, ideas, or feelings between individuals or groups, typically involving speech, writing, or gestures.
Discrimination
Unfair or prejudicial treatment of people based on characteristics such as race, age, or gender.
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