1 PXF 2-amino-1,9-dicarbonyl-4,6-dimethyl-10-dehydro-8-fluoro-3-oxophenoxazine 1.000 2 PXZ 2-amino-1,9-dicarbonyl-4,6-dimethyl-10-dehydro-phenoxazin-3-one 0.957 3 PX1 (1z)-7-amino-1-(hydroxymethylene)-2-imino-4,6-dimethyl-3-oxo-2,3-dihydro-1h-phenoxazine-9-carbaldehyde 0.917 4 PXA 2-amino-1,9-dicarbonyl-4,6-dimethyl-10-dehydro-3-oxo(8-aza)phenoxazine 0.875