Provided is a novel compound of Chemical Formula 1:






wherein:

X1 to X3 are each independently N or CH, provided that at least two are N,
Y1 and Y2 are independently O or S,
L is a single bond, or a substituted or unsubstituted C6-60 arylene or C2-60 heteroarylene, provided that L is bonded to a position *1 or *2,
Ar1 and Ar2 are independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O, and S, and
R1 to R4 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, silyl, or a substituted or unsubstituted: C1-60 alkyl, C1-60 haloalkyl, C1-60 alkoxy, C1-60 haloalkoxy, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, C6-60 aryloxy, C2-60 heteroaryl containing one or more of N, O, and S, or adjacent substituents combine to form a C6-60 aromatic or non-aromatic ring, or a C2-60 heteroaromatic ring,

and an organic light emitting device including the same.