(* Hint Rewrite move_prop_from_SEP move_local_from_SEP : norm. *)

Lemma assert_later_PROP:
forall P1 Espec {cs: compspecs} Delta PQR c Post,
ENTAIL Delta, PQR|-- !! P1 ->
(P1 -> @semax cs Espec Delta (|> PQR) c Post) ->
@semax cs Espec Delta (|> PQR) c Post.