Angiotensin ?

(3S) -3-amino-4-[[ (2S) -1-[[ (2S) -1-[[ (2S) -1-[[ (2S,3S) -1-[[ (2S) -1-[ (2S) -2-[[ (1S) -1-carboxy-2-phenylethyl]carbamoyl]pyrrolidin-1-yl]-3- (1H-imidazol-5-yl) -1-oxopropan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-3- (4-hydroxyphenyl) -1-oxopropan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-5- (diaminomethylideneamino) -1-oxopentan-2-yl]amino]-4-oxobutanoic acid

CC[C@H] (C) [C@@H] (C (=O) N[C@@H] (CC1=CN=CN1) C (=O) N2CCC[C@H]2C (=O) N[C@@H] (CC3=CC=CC=C3) C (=O) O) NC (=O) [C@H] (CC4=CC=C (C=C4) O) NC (=O) [C@H] (C (C) C) NC (=O) [C@H] (CCCN=C (N) N) NC (=O) [C@H] (CC (=O) O) N