Compound and organic light emitting device comprising the same

A compound represented by the following Chemical Formula 1:

• Wherein in Chemical Formula 1,
• Y1 is O or S,
• L1 and L2 are each independently a single bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C2-60 heteroarylene containing one or more heteroatoms selected from the group consisting of O, N, and S,
• with the proviso that L2 is bonded to any one of positions *1, *2, and *3,
• A is represented by any one of Chemical Formulas 2 to 4;
• wherein in Chemical Formulas 2 to 4,
• X1 to X3 are each independently N or CH, with the proviso that at least two of X1 to X3 are N,
• X4 and X5 are each independently N or CH, with the proviso that at least one of X4 and X5 is N,
• X6 and X7 are each independently N or CH, with the proviso that at least one of X6 and X7 is N,
• Y2 is O or S, and
• Ar1 to Ar4 are each independently a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O, and S,
• with the proviso that when L2 is bonded to position *3 and A is represented by Chemical Formula 2, Ar2 is a substituted or unsubstituted C10-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S.