Subsequent to the receipt by Tenant of Notice from Landlord as to the identity of any Superior Mortgagee (which Notice shall be accompanied by a copy of the applicable Mortgage and the address of the Superior Mortgagee), no notice from Tenant to Landlord as to the Leased Property shall be effective unless and until a copy of the same is given to such Superior Mortgagee at the address set forth in the above described Notice, and the curing of any of Landlord’s defaults by such Superior Mortgagee shall be treated as performance by Landlord.