A 16-year-old female is diagnosed with Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome. On physical examination, she has normal female secondary sexual characteristics (Tanner stage 5 breast and pubic hair development). A pelvic ultrasound confirms the absence of a uterus and the presence of normal-appearing ovaries. What is the most likely karyotype for this patient?