1 N32 2,4-dihydroxy-3-({3-[(2s,4as,8s,8ar)-8-methyl-3-methylidene-7-oxo-1,3,4,7,8,8a-hexahydro-2h-2,4a-ethanonaphthalen-8-yl]propanoyl}amino)benzoic acid 1.000 2 N3A 2,4-dihydroxy-3-({3-[(2r,4ar,8s,8ar,9r)-9-hydroxy-8-methyl-3-methylidene-7-oxo-1,3,4,7,8,8a-hexahydro-2h-2,4a-ethanonap hthalen-8-yl]propanoyl}amino)benzoic acid 0.969 3 P9A 3-({3-[(1s,4as,6s,7s,9s,9ar)-1,6-dimethyl-2-oxodecahydro-6,9-epoxy-4a,7-methanobenzo[7]annulen-1-yl]propanoyl}amino)-2,4-dihydroxybenzoic acid 0.853 4 PMN Platensimycin 0.853 5 840 Platensimycin a1 0.829 6 P9C 3-({3-[(1s,4s,4as,6s,7s,9s,9ar)-1,6-dimethyl-2-oxo-4-phenyldecahydro-6,9-epoxy-4a,7-methanobenzo[7]annulen-1-yl]propanoyl}amino)-2,4-dihydroxybenzoic acid 0.725