3148-09-2 379Y Antibiotic 379Y Muconomycin A NSC200736 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 VERRUCARIN A Ver A