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][=Branch1][C][=O][N][C@H1][C@H1][Branch2][Ring2][N][O][C@H1][C@H1][Branch1][C][O][C@@H1][Branch1][#Branch1][N][C][Branch1][C][C][=O][C][Branch1][C][O][O][C@@H1][Ring1][N][C][O][C@@H1][O][C@@H1][Branch1][C][C][C@@H1][Branch1][C][O][C@@H1][Branch1][C][O][C@@H1][Ring1][=Branch2][O][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch3][Ring1][=Branch2][=Branch2][O][C@@H1][O][C@H1][Branch2][=C][Ring2][C][O][C@H1][O][C@H1][Branch2][#Branch1][=Branch2][C][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch2][Branch1][=C][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@H1][Branch1][C][O][C@H1][Branch2][Ring2][=Branch2][O][C@][Branch1][=Branch1][C][=Branch1][C][=O][O][C][C@H1][Branch1][C][O][C@@H1][Branch1][#Branch1][N][C][Branch1][C][C][=O][C@H1][Branch1][O][C@H1][Branch1][C][O][C@H1][Branch1][C][O][C][O][O][Ring2][Ring1][Ring2][C@H1][Ring2][Ring1][=C][O][C@H1][Branch1][C][O][C@H1][Ring2][Ring2][=Branch2][N][C][Branch1][C][C][=O][C@@H1][Branch1][C][O][C@H1][Branch1][C][O][C@@H1][Ring2][Branch1][#Branch1][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch2][Branch1][=C][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@H1][Branch1][C][O][C@H1][Branch2][Ring2][=Branch2][O][C@][Branch1][=Branch1][C][=Branch1][C][=O][O][C][C@H1][Branch1][C][O][C@@H1][Branch1][#Branch1][N][C][Branch1][C][C][=O][C@H1][Branch1][O][C@H1][Branch1][C][O][C@H1][Branch1][C][O][C][O][O][Ring2][Ring1][Ring2][C@H1][Ring2][Ring1][=C][O][C@H1][Branch1][C][O][C@H1][Ring2][Ring2][=Branch2][N][C][Branch1][C][C][=O][C@@H1][Branch1][C][O][C@H1][Branch2][N][C][O][C@H1][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch2][Branch1][#Branch1][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch2][Ring1][=N][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@H1][Branch1][C][O][C@H1][Branch1][#Branch2][O][S][=Branch1][C][=O][=Branch1][C][=O][O][C@H1][Ring1][=C][O][C@H1][Branch1][C][O][C@H1][Ring2][Ring1][=Branch2][N][C][Branch1][C][C][=O][C@H1][Branch1][C][O][C@@H1][Ring2][Ring2][#Branch1][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch2][Branch1][=C][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@H1][Branch1][C][O][C@H1][Branch2][Ring2][=Branch2][O][C@][Branch1][=Branch1][C][=Branch1][C][=O][O][C][C@H1][Branch1][C][O][C@@H1][Branch1][#Branch1][N][C][Branch1][C][C][=O][C@H1][Branch1][O][C@H1][Branch1][C][O][C@H1][Branch1][C][O][C][O][O][Ring2][Ring1][Ring2][C@H1][Ring2][Ring1][=C][O][C@H1][Branch1][C][O][C@H1][Ring2][Ring2][=Branch2][N][C][Branch1][C][C][=O][C@@H1][Ring2][=C][Ring2][O][C@@H1][Ring2][S][#Branch1][O]

The molecule is a polysaccharide with molecular formula C129H211N9O97S consisting of NeuAc(a2-3)Gal(b1-4)GlcNAc(b1-2)[Gal3S(b1-4)GlcNAc(b1-4)]Man(a1-3)[NeuAc(a2-3)Gal(b1-4)GlcNAc(b1-2)[NeuAc(a2-3)Gal(b1-4)GlcNAc(b1-6)]Man(a1-6)]Man(b1-4)GlcNAc(b1-4)[Fuc(a1-6)]GlcNAc. It is a polysaccharide, a member of N-acetylneuraminic acids and a polysaccharide sulfate.

SMILES: CC(=O)NC1C(O)OC(COC2OC(C)C(O)C(O)C2O)C(OC2OC(CO)C(OC3OC(COC4OC(COC5OC(CO)C(OC6OC(CO)C(O)C(OC7(C(=O)O)CC(O)C(NC(C)=O)C(C(O)C(O)CO)O7)C6O)C(O)C5NC(C)=O)C(O)C(O)C4OC4OC(CO)C(OC5OC(CO)C(O)C(OC6(C(=O)O)CC(O)C(NC(C)=O)C(C(O)C(O)CO)O6)C5O)C(O)C4NC(C)=O)C(O)C(OC4OC(CO)C(OC5OC(CO)C(OC6OC(CO)C(O)C(OS(=O)(=O)O)C6O)C(O)C5NC(C)=O)C(O)C4OC4OC(CO)C(OC5OC(CO)C(O)C(OC6(C(=O)O)CC(O)C(NC(C)=O)C(C(O)C(O)CO)O6)C5O)C(O)C4NC(C)=O)C3O)C(O)C2NC(C)=O)C1O