Connecting RJ45 to QSFP56

We have an MSN3700-VS2R, and are trying to connect a device that only has an RJ45 10/100/1G port. It’s a UPS, so installing a ConnectX NIC is really not an option.

Are there any RJ45 transceivers for QSPF56? I see some for QSPF28, but I’m guessing that wouldn’t work well.

Thanks.