3148-09-2 379Y AI3-29707 Antibiotic 379Y Muconomycin A NSC 126728 NSC 200736 Spiro(16,18-methano-1H,3H,23H-(1,6,12)trioxacyclooctadecino(3,4-d)(1)benzopyran-17(18H),2'-oxirane)-3,9,14-trione, 4,5,6,7,16,16a,19a,22-octahydro-4-hydroxy-5,16a,21-trimethyl-, stereoisomer VER A Verrucarin A Verrucarin A (8CI)(9CI)