Compound, electrophotographic photoreceptor, and process cartridge

A compound has a structure represented by the following formula (C1):wherein Ra1, Ra2, Ra3, Ra41, Ra42, Ra43, Ra44, Ra45, Ra5, Ra6, Ra7, Ra8, Ra9, Ra10, and Ra11 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aralkyl group, an aryl group, a cyano group, a halogen atom, or a group obtained by combining two or more of the above groups, and a combination of Ra1 and Ra2, Ra41 and Ra42, Ra42 and Ra43, Ra43 and Ra44, Ra44 and Ra45, Ra5 and Ra6, Ra8 and Ra9, or Ra10 and Ra11 each independently may form a ring. The invention also relates to an electrophotographic photoreceptor comprising the compound, and a process cartridge.