C. (8S, 10S)-10-[(3-amino-2,3,6-trideoxy-α-L-lyxo-hexopyranosyl)oxy]-6,8,11 -trihydroxy-1-methoxy-8-(2-oxopropyl)-7,8,9,10-tetrahydronaftacen-5,12-dion (feudomycin B),