| http://www.w3.org/ns/prov#value | - he group consisting of NRx, S, and O, or SH and OH when S and O are located in a terminal position, with x being an integer such that the nitrogen atoms present are quaternary or tertiary; a, c, f and h are each integers ranging from 1 to 5; e and j are each integers ranging from 0 to 25; and k is an integer of 0 or 1; with the proviso that k must be 0 when A is S or O; R is a member selected from
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