If I have an object with a space in the property name:

var myObj = { prop1: 12, 'prop two': { abc: 123} };

What's the correct syntax to access 'prop two' (or e.g. a non-existent 'prop three') with optional chaining?

I've tried various combinations. The obvious one would be myObj['prop two']?['abc'] or myObj['prop two']?.['abc'] but neither work. I need to attempt access on a non-existent property and return undefined as dot notation would (but I can't use dot notation with spaces)

Thanks