Footprint of a crystal

I am not sure how to create some not so common footprint in KiCAD. I am using this 40 MHz crystal for my design. The bottom of the crystal looks like this.

How can I create those arcs and joints between the two pads? Any footprint in the library?

I need a 40MHz crystal w/ ~6pf load capacitance (and don’t want to pick a rare component)

You wouldn’t be able to create the arcs without a lot of effort. But
luckily, if you check the datasheet, you can see that the
recommended landing pattern is just four rectangular pads.