A contract is valid as to form if the contract meets the requirements prescribed either by the law chosen by the parties under ORS 15.350 and 15.355, the law applicable under ORS 15.320, 15.360 or 15.380, or the law of the state from which any party or the party’s agent has assented to the contract unless that state has no other connection to the parties or the transaction. [Formerly 81.110]