Complex sentence: This, of course, was a very bad idea and the gods are not fooled, with the exception of Demeter who, distracted because of her daughter, Persephone, being abducted by Hades, was the only god not to notice and ate Pelops's shoulder.
Split into simpler sentences: This, of course, was a very bad idea and the gods found out. Demeter, being distracted because of her daughter, Persephone, being abducted by Hades, was the only god not to notice and ate Pelops's shoulder.