Complex sentence: Böcklin produced several different versions of the painting, the first (at the Metropolitan Museum) in 1880 on a request by Marie Berna, whose husband had recently died.
Split into simpler sentences: Böcklin produced several different versions of the painting. The first version of the painting, which is currently at the Metropolitan Museum in New York City, was created in 1880 on a request by Marie Berna, whose husband had recently died.