Is not subject (ouch hupotassetai). Present passive indicative of hupotassō, late verb, military term for subjection to orders. Present tense here means continued insubordination.
Neither indeed can it be (oude gar dunatai). “For it is not even able to do otherwise.” This helpless state of the unregenerate man Paul has shown above apart from Christ. Hope lies in Christ (Rom 7:25) and the Spirit of life (Rom 8:2).