1 5VD Methyl (1~{R},2~{R},4~{S})-2-methyl-2,4,5,7,10-pentakis(oxidanyl)-6,11-bis(oxidanylidene)-3,4-dihydro-1~{H}-tetracene-1-carboxylate 1.000 2 VAK Methyl (1r,2r,4s)-2-ethyl-2,4,5,7-tetrahydroxy-6,11-dioxo-1,2,3,4,6,11-hexahydrotetracene-1-carboxylate 0.935 3 NGV Methyl 5,7-dihydroxy-2-methyl-4,6,11-trioxo-3,4,6,11-tetrahydrotetracene-1-carboxylate 0.933 4 ZBX Methyl (1r,2r,4s)-2-ethyl-7-methoxy-2,4,5-tris(oxidanyl)-6,11-bis(oxidanylidene)-3,4-dihydro-1h-tetracene-1-carboxylate 0.848