Complex sentence: Art historian Mary Matthews Gedo considers Monet's painting as "one of the most magnificent snow scenes in his entire oeuvre" and it is often cited by the Musee d'Orsay as one of the most popular paintings in their permanent collection.
Split into simpler sentences: Art historian Mary Matthews Gedo considers Monet's painting as "one of the most magnificent snow scenes in his entire oeuvre". It is often cited by the Musee d'Orsay as one of the most popular paintings in their permanent collection.