(-)-Vermiculine 1,9-Dioxacyclohexadeca-3,11-diene-2,5,10,13-tetrone, 8,16-bis(2-oxopropyl)-, [8S-(3E,8R*,11E,16R*)]- 1,9-Dioxacyclohexadeca-3,11-diene-2,5,10,13-tetrone,8,16-bis(2-oxopropyl)-, (3E,8S,11E,16S)- NSC657321 Vermiculin Vermiculine