Complex sentence: The Keres were daughters of Nyx, and as such the sisters of the Fates-collectively known as the Moirai, the names of the three Moirai being Atropos, Clotho and Lachesis.
Split into simpler sentences: The Keres were daughters of Nyx, and as such the sisters of the Fates-collectively known as the Moirai. The names of the three Moirai being Atropos, Clotho and Lachesis.