N-[(2S)-2-{[L-alpha-aspartyl-N~5~-(diaminomethylidene)-L-ornithyl-L-valyl]amino}-2-(4-hydroxyphenyl)acetyl]-L-isoleucyl-L-histidyl-L-prolyl-N-[(1S,4R)-4-acetyl-3-amino-1-(1H-imidazol-5-ylmethyl)-6-methyl-2-oxoheptyl]-L-phenylalaninamide; Angiotensin I