87092-83-9 Chimeramycin B Tylosin, 23-de((6-deoxy-2,3-di-O-methyl-beta-D-allopyranosyl)oxy)-9-deoxo-9-((5-(dimethylamino)tetrahydro-6-methyl-2H-pyran-2-yl)oxy)-, (9R(2R,5S,6R))-