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- A 080555 A 80555 Antibiotic 170t DINACTIN (UPJOHN 170T, LOW MELTING) Dinactin NSC63925 Nonactin, 5,23-didemethyl-5,23-diethyl- Upjohn 170T (low melting)