methyl N(3)-(2-(3-(4-formamidino-phenyl)-isoxazolin-5(R)-yl)-acetyl)-N(2)-(1-butyloxycarbonyl)-2,3-(S)-diaminopropionate
methyl n(3)-(2-(3-(4-formamidino-phenyl)-isoxazolin-5(r)-yl)-acetyl)-n(2)-(1-butyloxycarbonyl)-2,3-(s)-diaminopropionate