Synonyms: 16H-14a,17-Metheno-14aH-benzo[e]naphtho[2,1-k][1,4]dioxacyclotridecin-12-carboxylicacid, 4-[[6-deoxy-3-O-(2,6-dideoxy-4-O-methyl-b-D-ribo-hexopyranosyl)-4-O-(2-methoxy-6-methylbenzoyl)-b-D-allopyranosyl]oxy]-13-ethyl-1,2,3,4,4a,6a,7,8,9,10,10a,13,14,19,19a,19b-hexadecahydro-3,20-dihydroxy-6,10a,19a-trimethyl-16,19-dioxo-,[3S-(3R*,4S*,4aR*,6aR*,10aS*,13S*,14aR*,19aR*,19bS*)]-; Antibiotic PA 46101A