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Chemical structures of quinones elucidated from the results obtained in this report [TPQ-7(a) and -7(b) and MTK-7(c) and MK-7(d)] and the structures identified by Nicolaus et al. (13) [CQ(e), SQ(f), and SSQ(g), where SQ is sulfolobusquinone and SSQ is tricyclic quinone].
