Based on the existing answers, it appears that the contract address of Yupana on Ghostnet is KT1PW3aKxfB89HUrq8ywnw9tLvxtuHLgsjJW. However, at the moment there is no entrypoint to check the list of tokens available on the protocol. The tokens that can be deposited or borrowed from the protocol are TEZ, cTEZ, tzBTC, kUSD, uUSD, and uBTC. To get a list of all the reserve tokens, you can check the official website of Ghostnet or contact their customer service team for more information.