Complex sentence: According to The Heritage Store, their Atomidine contains iodine in the form of iodine trichloride and is manufactured from elemental iodine and pure chlorine gas.
Split into simpler sentences: According to The Heritage Store, their Atomidine ® contains iodine in the form of iodine trichloride. This iodine trichloride is manufactured from elemental iodine and pure chlorine gas.