N(alpha)-(4-((2,4-diamino-5-chloroquinazolin-6-yl)methyl)amino)benzoyl-N(delta)-hemiphthaloyl-L-ornithine
n(alpha)-(4-((2,4-diamino-5-chloroquinazolin-6-yl)methyl)amino)benzoyl-n(delta)-hemiphthaloyl-l-ornithine