72213-98-0 7H-(1,5,10)Trioxacyclotetradecino(7,8,9-gh)pyrrolizine-2,5,9(8H)-trione,3,4,11,13,15,16,16a,16b-octahydro-3,8-dihydroxy-7-methyl-3,8-bis(1-methylethyl)-, (3S,7R,8S,16aR,16bR)-