20261-85-2 4,13,22,31,37,38,39,40-Octaoxapentacyclo(32.2.1.17,10.116,19.125,28)tetracontane-3,12,21,30-tetrone, 5,23-diethyl-2,11,14,20,29,32-hexamethyl- (VAN) (8CI) Akd-1C Antibiotic 170t Dinactin NSC 63925 Nonactin, 5,23-didemethyl-5,23-diethyl- Upjohn 170T (low melting)