Vanadium(4+),oxo[[4,4',4'',4'''-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis[1-methylpyridiniumato]](2-)-N21,N22,N23,N24]-,(SP-5-12)-; Pyridinium,4,4',4'',4'''-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis[1-methyl-, vanadiumcomplex
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