Good grief!!!
I thought that I knew most houseplants............................. I do not recognise this at all.
My first reaction was a pelargonium, but not after blowing the pic's up.
Any chance of a far closer close-up of the leaves?
Irrespective of what it was/is sold as, it could be an acer, a bamboo or a dracaena. It could easily be a cheap and cheerful Bonsai - crataegus?