Calculating Molarity of NaOH in a Titration/pH Problem

[emc92]

When 22.63 mL of aqueous NaOH was added to 1.226 g of cyclohexylaminoethanesulfonic acid (FM 207.29, structure in the table) dissolved in 41.37 mL of water, the pH was 9.24. Calculate the molarity of the NaOH.

How do I start this calculation?

 

[Borek]

Most likely finding pKa in the table.

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