25339-90-6 4,17-Dioxabicyclo[14.1.0]heptadec-14-ene-10-acetaldehyde, 9-[[3,6-dideoxy-3-(dimethylamino)-D-glucopyranosyl]oxy]-3-ethyl-7-hydroxy-2,8,12,16-tetramethyl-5,13-dioxo- Antibiotic B 58941B Cirramycin A1 NSC246129