Specific atoms or bonded arrangements of atoms within a molecule, responsible for the molecule's chemical properties
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(S)-2-[N'-(2-allyloxycarbonylaminoethyl)-N',N''-di(tert-butoxycarbonyl)guanidino]-3-(4-hydroxyphenyl)propionic acid methyl ester
Methylium, [4-(methylthio)phenyl]-
N-[(1S,2R)-3-((1R,5S,7S)-10,10-Dimethyl-3,3-dioxo-3λ6-thia-4-aza-tricyclo[5.2.1.01,5]dec-4-yl)-2-(4-methoxy-benzyloxy)-3-oxo-1-phenyl-propyl]-benzamide
