Let be a class of non-abelian simple groups and be a class of groups. A chief factor of a group is called -central in provided $(H/K)\rtimes G/C_G(H/K)\in\mathfrak{X}G\mathfrak{J}cs\mathfrak{X}\mathfrak{X}G\mathfrak{X}$-central and other chief factors of are simple -groups. We use to denote the class of all --groups. A subgroup of a group is called -\emph{maximal} in provided that , and if and , then . In this paper we described the structure of --groups for a solubly saturated formation and all hereditary saturated formations containing all nilpotent groups such that the -hypercenter of coincides with the intersection of all -maximal subgroups of for every group .

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