1	MXF	(2s,3r)-4-(2-aminoethylcarbamoyloxy)-2-[(2-methanoylindolizin-3-yl)amino]-3-methyl-3-sulfino-butanoic acid	1.000
2	MXC	(2s,3r)-2-[(7-aminocarbonyl-2-methanoyl-indolizin-3-yl)amino]-4-aminocarbonyloxy-3-methyl-3-sulfino-butanoic acid	0.758