(12E,22E,24Z)-5,6,18,20-tetrahydroxy-14-methoxy-7,9,15,17,19,21,25-heptamethyl-1′-(2-methylpropyl)-10,26-dioxo-9,10-dihydrospiro[9,4-(epoxypentadeca[1,11,13]trienoimino)furo[2′,3′:7,8]naphtho[1,2-d]imidazole-2,4′-piperidin]-16-yl acetate

(12E,22E,24Z)-5,6,18,20-tetrahydroxy-14-methoxy-7,9,15,17,19,21,25-heptamethyl-1′-(2-methylpropyl)-10,26-dioxo-9,10-dihydrospiro[9,4-(epoxypentadeca[1,11,13]trienoimino)furo[2′,3′:7,8]naphtho[1,2-d]imidazole-2,4′-piperidin]-16-yl acetate

(9E,19E,21Z)-2,15,17,32-Tetrahydroxy-1′-isobutyl-11-methoxy-3,7,12,14,16,18,22-heptamethyl-6,23-dioxospiro[8,33-dioxa-24,27,29-triazapentacyclo[23.6.1.1~4,7~.0~5,31~.0~26,30~]tritriaconta-1(31),2,4,9, 19,21,25(32),26,29-nonaene-28,4′-piperidin]-13-yl acetate

2,15,17-trihydroxy-1′-isobutyl-11-methoxy-3,7,12,14,16,18,22-heptamethyl-6,23,32-trioxospiro[8,33-dioxa-24,27,29-triazapentacyclo[23.6.1.14,7.05,31.026,30]tritriaconta-1,3,5(31),9,19,21,25,29-octaene-28,4′-(hexahydropyridine)]-13-yl acetate

2,15,17-trihydroxy-1′-isobutyl-11-methoxy-3,7,12,14,16,18,22-heptamethyl-6,23,32-trioxospiro[8,33-dioxa-24,27,29-triazapentacyclo[23.6.1.14,7.05,31.026,30]tritriaconta-1,3,5(31),9,19,21,25,29-octaene-28,4′-(hexahydropyridine)]-13-yl acetateRifamycin analogue