Original: Friedensreich Regentag Dunkelbunt Hundertwasser (December 15, 1928 - February 19, 2000) was an Austrian painter and architect.
Simplified: Friedrich Stowasser (better known as Friedensreich Hundertwasser, born 15 December 1928, died 19 February 2000) was an Austrian artist. He often called himself Friedensreich Regentag Dunkelbunt Hundertwasser.