(1S,2R,5R,6R,10R,11R,13R,15R,16R,20S)-15-Benzyloxy-5-ethyl-2,6,11,13,15,18,18,20-octamethyl-8-phenyl-4,7,9,17,19-pentaoxa-tricyclo[14.3.1.06,10]icosane-3,12-dione

(1S,2R,4R,5R,9S,10R,13R,14R,15R,19S,20S)-4,14-Bis-benzyloxy-13-ethyl-2,4,7,7,10,14,17,17,19,20-decamethyl-6,8,12,16,18-pentaoxa-tricyclo[13.3.1.15,9]icosan-11-one

3,5:9,11-di-O-isopropylidene.(9S)-9-deoxo-hydroxyerythronolide

(3R,4S,5S,6R,7R,9R,10S,11S,12R,13S,14R)-7,13-Bis-benzyloxy-14-ethyl-4,6,10,12-tetrahydroxy-3,5,7,9,11,13-hexamethyl-oxacyclotetradecan-2-one