| n(sup 2)-(4-chlorobenzoyl)-n(sup 5)-(4-hydroxybenzoyl)-l-ornithin |
| n(sup 2)-(4-chlorobenzoyl)-n(sup 5)-(4-hydroxybenzoyl)-l-ornithine |
| n(sup 2)-(p-chlorobenzoyl)-n(sup 5)-(p-hydroxybenzoyl)ornithine |
| n(sup 2)-(4-chlorobenzoyl)-n(sup5)-(4-hydroxybenzoyl)-l-ornithin |
