Clavulanic acid (structure shown) is a drug used in conjunction with some antibiotics to overcome certain types of antibiotic resistance. How many chirality centers are in clavulanic acid? 
Definitions:
Oral Contract
A verbal agreement between parties that is legally binding, provided it meets all requirements of a valid contract.
Reasonable Reliance
Reasonable reliance involves acting based on the expectation that the information or promises provided by another party are accurate and trustworthy.
Interest in Land
Legal rights or investments in real property, including ownership or the right to use the land under certain conditions.
Suretyship
A contractual arrangement where one party (the surety) guarantees the performance of a second party (the principal) to a third party (the obligee).
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