Task: Text Simplification
Input (English): the term " protein " itself was coined by berzelius , after mulder observed that all proteins seemed to have the same empirical formula and might be composed of a single type of -lrb- very large -rrb- molecule.
Output (English): the term " protein " itself was coined by berzelius after mulder observed that all proteins seemed to have the same formula and might be composed of a single type of molecule.