| http://www.w3.org/ns/prov#value | - FORMULA 2 ##STR3## In both the Formula 1 and 2 structures, B is a saturated ring formed by a plurality of atoms in addition to the N1 atom, and the ring atoms preferably include at least one carbon atom and at least one of 0, S, and N atoms, but can be composed of the one N1 atom and the rest carbons.
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