13-O-Desmethylascomycin 13-O-Desmethylimmunomycin 15,19-Epoxy-3H-pyrido(2,1-c)(1,4)oxaazacyclotricosine-1,7,20,21(4H,23H)-tetrone, 8-ethyl-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,16,19-trihydroxy-3-(2-(3-hydroxy-4-methoxycyclohexyl)-1-methylethenyl)-14-methoxy-4,10,12,18-tetramethyl-, (3S-(3R*(E(1S*,3S*,4S*)),4S*,5R*,8S*,9E,12R*,14R*,15R*,16R*,18S*,19S*,26aR*))- 153781-48-7