Ethyl [(1S,3R,4S,7R,8S,9S,11S,14S,17R,26S)-4,9,11,19,19-pentamethyl-5,10,21,24-tetraoxo-2,6,18,25-tetraoxaheptacyclo[12.10.1.1~1,8~.0~3,7~.0~11,26~.0~14,23~.0~16,20~]hexacosa-16(20),22-dien-17-yl]acet ate

2H,8H-7a,14a-Epoxy-3,10,15-trioxaazuleno[6′,5′:5,6]cyclooct[1,2,3-cd]-as-indacene-9-acetic acid, 1,3a,3b,4,5,5a,6,7,9,11,12,14,14b,15a-tetradecahydro-1,4,5a,11,11-pentamethyl-2,5,12,14-tetraoxo-, ethy l ester, (1S,3aR,3bS,4S,5aS,7aS,9R,14aS,14bS,15aR)-

2H,8H-7a,14a-epoxy-3,10,15-trioxaazuleno[6′,5′:5,6]cyclooct[1,2,3-cd]-as-indacene-9-acetic acid, 1,3a,3b,4,5,5a,6,7,9,11,12,14,14b,15a-tetradecahydro-1,4,5a,11,11-pentamethyl-2,5,12,14-tetraoxo-, ethyl ester, (1S,3aR,3bS,4S,5aS,7aS,9R,14aS,14bS,15aR)-

[(1S,3R,4S,7R,8S,9S,11S,14S,17R,26S)-4,9,11,19,19-Pentaméthyl-5,10,21,24-tétraoxo-2,6,18,25-tétraoxaheptacyclo[12.10.1.1~1,8~.0~3,7~.0~11,26~.0~14,23~.0~16,20~]hexacosa-16(20),22-dién-17-yl]acétate d' éthyle

ethyl [(1S,3aR,3bS,4S,5aS,7aS,9R,14aS,14bS,15aR)-1,4,5a,11,11-pentamethyl-2,5,12,14-tetraoxo-1,3a,3b,4,5,5a,6,7,9,11,12,14,14b,15a-tetradecahydro-2H,8H-7a,14a-epoxy-3,10,15-trioxaazuleno[6′,5′:5,6]cycloocta[1,2,3-cd]-as-indacen-9-yl]acetate

Ethyl [(1S,3R,4S,7R,8S,9S,11S,14S,17R,26S)-4,9,11,19,19-pentamethyl-5,10,21,24-tetraoxo-2,6,18,25-tetraoxaheptacyclo[12.10.1.1~1,8~.0~3,7~.0~11,26~.0~14,23~.0~16,20~]hexacosa-16(20),22-dien-17-yl]acet ate

Ethyl-[(1S,3R,4S,7R,8S,9S,11S,14S,17R,26S)-4,9,11,19,19-pentamethyl-5,10,21,24-tetraoxo-2,6,18,25-tetraoxaheptacyclo[12.10.1.1~1,8~.0~3,7~.0~11,26~.0~14,23~.0~16,20~]hexacosa-16(20),22-dien-17-yl]acet at

rubriflorin C