I don't think a Moon Maple has leaves cut to the centre?
https://www.google.co.uk/searc...
This appears to have a regular 7 leaflets but I see a small leaf has 5.
The form is similar to Aesculus but the stems are too thick.
I think the smaller plants are a younger version of the larger one.
Rodgersia aesculifolia looks much like it, but the leaves don't form a full circle. The leaves don't look to have fully opened so they might 'round up'.
http://plants.chaletnursery.co...
https://namethatplant.files.wo...
I would like to see the leaves when the are fully open.
