Given the structure of D-altrose below, draw the structure of L-altrose. 
Definitions:
Calvin Cycle
A set of light-independent chemical reactions in photosynthesis that occurs in the chloroplasts of plants, resulting in the conversion of carbon dioxide into glucose.
Noncyclic Electron Pathway
A part of photosynthesis where electrons travel in a linear path producing NADPH and ATP, unlike in the cyclic pathway where electrons are recycled.
Noncyclic Electron Pathway
A part of photosynthesis that involves the flow of electrons from water to NADP+, producing oxygen, ATP, and NADPH.
Electron Transport Chain
A series of compounds that transfer electrons from electron donors to electron acceptors via redox reactions, coupled with the transfer of protons (H+ ions) across a membrane, generating ATP.
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