Chemical Name: Sodium (4R,12aS)-9-((2,4-difluorobenzyl)carbamoyl)-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazin-7-olate
Smile: [O-]C(C(C(C(NCC1=CC=C(F)C=C1F)=O)=C2)=O)=C3N2C[C@]4([H])OCC[C@@H](C)N4C3=O.[Na+]