IUPAC: (2S)-2-[(2,3-dihydroxyphenyl)formamido]-3-{[(2S)-2-[(2,3-dihydroxyphenyl)formamido]-3-{[(2S)-2-[(2,3-dihydroxyphenyl)formamido]-3-hydroxypropanoyl]oxy}propanoyl]oxy}propanoic acid

SMILES: OC[C@H](NC(=O)c1cccc(O)c1O)C(=O)OC[C@H](NC(=O)c1cccc(O)c1O)C(=O)OC[C@H](NC(=O)c1cccc(O)c1O)C(O)=O