1 PCD (molybdopterin-cytosine dinucleotide-S,S)-dioxo-aqua-molybdenum(V) 1.000 2 MCN Pterin cytosine dinucleotide 0.917 3 NWS Moco-AMP 0.885 4 2MD Guanylate-O'-phosphoric acid mono-(2-amino-5,6-dimercapto-4-oxo-3,5,6,7,8a,9,10,10a-octahydro-4h-8-oxa-1,3,9,10-tetraaza-anthracen-7-ylmethyl) ester 0.792 5 MGD 2-amino-5,6-dimercapto-7-methyl-3,7,8a,9-tetrahydro-8-oxa-1,3,9,10-tetraaza-anthracen-4-one guanosine dinucleotide 0.792 6 PGD 2-amino-5,6-dimercapto-7-methyl-3,7,8a,9-tetrahydro-8-oxa-1,3,9,10-tetraaza-anthracen-4-one guanosine dinucleotide 0.792