Complex sentence: Xylometazoline (also known as xylomethazoline) is a topical decongestant that is applied directly into the nose, either as a spray or as drops.
Split into simpler sentences: Xylometazoline (also known as xylomethazoline) is a drug which is used as a nasal decongestant. It is a topical decongestant that is applied directly into the nose, either as a spray or as drops.