What is the intermediate structure for the reaction scheme?…

What is the intermediate structure for the reaction scheme? ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@