Answer
Nonaromatic (if pairs on the oxygen not included), antiaromatic (if pairs on the oxygen are included)
Work Step by Step
It would be non aromatic (if pairs on the oxygen not included) because then there is an element in the ring that is $sp^3$. It would be anti aromatic (if pairs on the oxygen are included) because then there would be 8 pi electrons which is 4n and not Huckel number.