Complex sentence: Ourumov later reports to Dmitri Mishkin, who informs him that Severnaya technician Natalya Fyodorovna Simonova has escaped, arranging Boris Grishenko to meet and kidnap her.
Split into simpler sentences: Ourumov later reports to Dmitri Mishkin, who informs him that Severnaya technician Natalya Fyodorovna Simonova has escaped. He arranges for Boris Grishenko to meet and kidnap her.