N1-[(6S,10S)-6-Ethyl-2-[[[(4-fluorophenyl)methyl]amino]carbonyl]-6,7,9,10-tetrahydro-3-hydroxy-4-oxo-4H-pyrimido[1,2-d][1,4]oxazepin-10-yl]-N1,N2,N2-trimethylethanediamide [ 1220510-45-1 ]