Clavulanic acid (structure shown) is a drug used in conjunction with some antibiotics to overcome certain types of antibiotic resistance. Which of these functional groups is NOT contained in clavulanic acid? 
Definitions:
Exponential Growth Curve
A graphical representation illustrating the accelerating increase of a population or quantity when the rate of growth is proportional to its current value.
Biotic Potential
The maximum reproductive capacity of an organism under optimum environmental conditions.
Reproductive Age Span
is the period in the life of an organism during which it is biologically capable of producing offspring.
Viable Population
A population size capable of maintaining or increasing its numbers over time, ensuring long-term survival and genetic diversity.
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