Organic compound and organic light-emitting element

An organic compound denoted by formula (1),

• in formula (1), each of R1 to R8 is selected from the group consisting of a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryloxy group, a substituted or unsubstituted silyl group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted heterocyclic group, and a cyano group, and A represents:
• in A above, * represents a position where bonding is performed, and B is selected from the group consisting of structures denoted by (B-1) to (B-15):
• in (B-1) to (B-15) above, * represents a position where bonding is performed, and each of R9 to R17 is selected from the group consisting of a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryloxy group, a substituted or unsubstituted silyl group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted heterocyclic group, and a cyano group, and X represents an oxygen atom or a sulfur atom.