121890-43-5 Desertomycin B Guanidine, ((4R,5R)-5-((3E,7S,8R,9S,10S,13E,15S,16S,17E,19S,20R,21E,23S,24R,26S,28S,30S,31S,32R,33S,34R,36S,38S,39E,42S)-6,8,10,12,14,16,18,20,24,28,34,36-dodecahydroxy-21-(alpha-D-mannopyranosyloxy)-11,13,23,25,29,35,37,41-octamethyl-42-oxooxacyclodotetraconta-4,22,26,30,40-pentaen-2-yl)-4-hydroxyhexyl)-