146565-63-1 4-O-Methylyellamycin A 5,12-Naphthacenedione, 8-ethyl-7,8,9,10-tetrahydro-6,7,8-trihydoxy-1-methoxy-10-((2,3,6-trideoxy-3-(dimethylamino)-alpha-L-lyxo-hexopyranosyl)oxy)-, (7R-(7alpha,8beta,10beta))-