How many stereogenic centers are there in Lovastatin (Mevacor®,a cholesterol-lowering drug) ? 
Definitions:
Market Equilibrium
A situation in which market supply equals market demand, and prices stabilize.
Demand Price
The highest price consumers are willing to pay for a good or service at a given quantity, reflecting the value placed on the item by the market.
Substitutes
Goods or services that can be used in place of each other, where an increase in the price of one leads to an increase in demand for the other.
Imposes a Quota
A restriction, set by a government, on the maximum number of units of a particular product that can be imported or exported within a given period.
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