4,13,22,31,37,38,39,40-Octaoxapentacyclo[32.2.1.17,10.116,19.125,28]tetracontane-3,12,21,30-tetrone, 2,5,11,14,20,23,29,32-octamethyl- 4,13,22,31,37,38,39,40-Octaoxapentacyclo[32.2.1.17,10.116,19.125,28]tetracontane-3,12,21,30-tetrone, 2,5,11,14,20,23,29,32-octamethyl-, [1R-(1R*,2R*,5R*,7R*,10S*,11S*,14S*,16S*,19R*,20R*,23R*,25R*,28S*,29S*,32S*,34S*)]- 5342 PFW 19 6833-84-7 A 4426 Antibiotic from Actinomycete NONACTIN NSC52141 Upjohn 170t (high melting)