What is "aesculapian snake"

The Aesculapian snake (now Zamenis longissimus, previously Elaphe longissima), is a species of nonvenomous snake native to Europe, a member of the Colubrinae subfamily of the family Colubridae. Growing up to in total length (including tail), it counts among the largest European snakes, though not as massive as the four-lined snake ( Elaphe quatuorlineata) or the Montpellier snake ( Malpolon monspessulanus). The Aesculapian snake has been of cultural and historical significance for its role in ancient Greek and Roman mythology and derived symbolism.