A compound represented by the following Chemical Formula 1: in Chemical Formula 1, A1 and A2 are the same as or different from each other, and are each independently a substituted or unsubstituted aromatic hydrocarbon ring; or a substituted or unsubstituted hetero ring, L101, L102, and L1 to L4 are the same as or different from each other, and are each independently a direct bond; a substituted or unsubstituted arylene group; or a substituted or unsubstituted heteroarylene group, Ar1 to Ar4 are the same as or different from each other, and are each independently a substituted or unsubstituted alkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, or are optionally bonded to an adjacent group to form a ring, R1 to R13 are the same as or different from each other, and are each independently hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted phosphine oxide group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, R4 and R5 are optionally bonded to each other to form a pentagonal ring, m and n are an integer of 0 or 1, and at least one of m and n is an integer of 1; characterized in that Chemical Formula 1 is represented by the following Chemical Formula 2 or 3: in Chemical Formulae 2 and 3, definitions of L101, L102, L1 to L4, Ar1 to Ar4, R1 to R13, m, and n are the same as those defined in Chemical Formula 1, any one of X1 and X2 is a direct bond, and the other is O, S, CY1Y2, or SiY5Y6, any one of X3 and X4 is a direct bond, and the other is O, S, CY3Y4, or SiY7Y8, W1 to W4 are the same as or different from each other, and are each independently N or CRa, and one or more of W1 to W4 are N, and Y1 to Y8, Ra, and R14 to R23 are the same as or different from each other, and are each independently hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted phosphine oxide group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, or are optionally bonded to an adjacent group to form a ring. A1 and A2 are the same as or different from each other, and are each independently a substituted or unsubstituted aromatic hydrocarbon ring; or a substituted or unsubstituted hetero ring, L101, L102, and L1 to L4 are the same as or different from each other, and are each independently a direct bond; a substituted or unsubstituted arylene group; or a substituted or unsubstituted heteroarylene group, Ar1 to Ar4 are the same as or different from each other, and are each independently a substituted or unsubstituted alkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, or are optionally bonded to an adjacent group to form a ring, R1 to R13 are the same as or different from each other, and are each independently hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted phosphine oxide group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, R4 and R5 are optionally bonded to each other to form a pentagonal ring, m and n are an integer of 0 or 1, and at least one of m and n is an integer of 1; definitions of L101, L102, L1 to L4, Ar1 to Ar4, R1 to R13, m, and n are the same as those defined in Chemical Formula 1, any one of X1 and X2 is a direct bond, and the other is O, S, CY1Y2, or SiY5Y6, any one of X3 and X4 is a direct bond, and the other is O, S, CY3Y4, or SiY7Y8, W1 to W4 are the same as or different from each other, and are each independently N or CRa, and one or more of W1 to W4 are N, and Y1 to Y8, Ra, and R14 to R23 are the same as or different from each other, and are each independently hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted phosphine oxide group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, or are optionally bonded to an adjacent group to form a ring.