How many stereogenic centers are there in Lovastatin ( Mevacor® : a cholesterol-lowering drug) ? 
Definitions:
Processing Cost
The expenses involved in the transformation of raw materials into finished products, including labor, machine usage, and utilities.
Disposal Cost
The expenses associated with getting rid of waste, byproducts, or unwanted materials, including transportation, processing, and regulatory fees.
Revenue Retrieval
Revenue Retrieval involves the process or strategies deployed to recover or increase income that has been lost or underachieved.
Resale Revenue
Income generated from selling a product or asset that was previously bought.
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