Complex sentence: Delphi Prism (latterly known as Embarcadero Prism) was a derivative of the Oxygene programming language product (previously known as Chrome) from RemObjects which ran in the Microsoft Visual Studio IDE rather than RAD Studio.
Split into simpler sentences: Delphi Prism (latterly known as Embarcadero Prism) derived from the Oxygene programming language product (previously known as Chrome) from RemObjects. It ran in the Microsoft Visual Studio IDE rather than RAD Studio.