You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][C][C][Branch1][C][C][C@H1][Branch2][P][=Branch2][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch1][C][C][Branch1][C][N][=O][N][C][=Branch1][C][=O][C@H1][Branch1][=N][C][C][=C][C][=C][Branch1][C][O][C][=C][Ring1][#Branch1][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch2][C][C][=C][NH1][C][=N][Ring1][Branch1][N][C][=Branch1][C][=O][C@@H1][Branch2][O][#Branch1][N][C][=Branch1][C][=O][C@@H1][Branch2][#Branch2][=Branch2][N][C][=Branch1][C][=O][C@@H1][C][C][C][N][Ring1][Branch1][C][=Branch1][C][=O][C@H1][Branch1][#Branch1][C][C][Branch1][C][N][=O][N][C][=Branch1][C][=O][C@H1][Branch1][Branch2][C][C][C][Branch1][C][N][=O][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch1][C][C][C][C][N][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch1][C][C][C][C][N][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch1][C][C][C][C][N][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch1][C][C][C][C][N][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C@@H1][Branch1][C][N][C][C][C][C][N][C][Branch1][C][C][C][C][Branch1][C][C][C][C][=Branch1][C][=O][N][C@H1][Branch2][=Branch1][Branch2][C][=Branch1][C][=O][N][C@H1][Branch2][Branch1][#Branch2][C][=Branch1][C][=O][N][C][C][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][N][C@@H1][Branch1][#Branch2][C][C][C][N][C][=Branch1][C][=N][N][C][=Branch1][C][=O][N][C@H1][Branch1][P][C][=Branch1][C][=O][N][C][C][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][O][C][Branch1][C][C][O][C][Branch1][C][C][O][C][Branch1][C][C][C]

The molecule is a linear 27-membered polypeptide comprising the sequence Lys-Gly-Lys-Gly-Lys-Gly-Lys-Gly-Lys-Gly-Glu-Asn-Pro-Val-Val-His-Phe-Phe-Tyr-Asn-Ile-Val-Thr-Pro-Arg-Thr-Pro. Corresponds to the sequence of the myelin basic protein 83-99 (MBP83-99) immunodominant epitope with the lysyl residue at position 91 replaced by tyrosyl [MBP83-99(Y(91))] and with an (L-lysylglycyl)5 [(KG5)] linker attached to the glutamine(83) (E(83)) residue.

SMILES: CCC(C)C(NC(=O)C(CC(N)=O)NC(=O)C(Cc1ccc(O)cc1)NC(=O)C(Cc1ccccc1)NC(=O)C(Cc1ccccc1)NC(=O)C(Cc1c[nH]cn1)NC(=O)C(NC(=O)C(NC(=O)C1CCCN1C(=O)C(CC(N)=O)NC(=O)C(CCC(N)=O)NC(=O)CNC(=O)C(CCCCN)NC(=O)CNC(=O)C(CCCCN)NC(=O)CNC(=O)C(CCCCN)NC(=O)CNC(=O)C(CCCCN)NC(=O)CNC(=O)C(N)CCCCN)C(C)C)C(C)C)C(=O)NC(C(=O)NC(C(=O)N1CCCC1C(=O)NC(CCCNC(=N)N)C(=O)NC(C(=O)N1CCCC1C(=O)O)C(C)O)C(C)O)C(C)C