4-Amino-2,5-dioxo-7-oxabicyclo(4.1.0)hept-3-ene-3-carboxamide 4-Amino-7-oxa-bicyclo(4,1,0)hept-3-ene-2,5-dione-3-carboxamide 63582-80-9 7-Oxabicyclo(4.1.0)hept-3-ene-3-carboxamide, 4-amino-2,5-dioxo- Antibiotic G 7063-2 G 7063-2 G-7063-2