Help please. How to configurate AnyConnect VPN for employees in this scenario??

Hi everybody;

We want to configure Cisco's anyconnect service to offer around 50 VPN employees to connect to our offices. The problem with what you can see in the topology is that employees must point to one of our Public IP's to link to our datacenter. The question is, if the ASA is below in the topology that I show you, how to configure properly so that users can connect correctly via VPN?

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