There is no MAC offering for the Windows-only Suite you purchased: But you can confirm it by logging into your Accounts page and seeing if the MAC version of AUtoCAD alone is available to you as a download there https://manage.autodesk.com/cep/#products-services/all

Your next step is to contact a reseller in your region of the world to discuss options http://www.autodesk.com/resellers/locate-a-reseller