You are a professional biochemist designing molecular structures. Please generate the molecular structure (SELFIES) based on the following description.

 Please think step by step and return the final answer in <answer> </answer> tags, for example <answer> [C][C@H1][C@@H1][Branch2]... </answer>. Do not use <|...|> or other formats.

The molecule is a branched amino oligosaccharide that is an nonadecasaccharide derivative consisting of a linear trisaccharide of beta-D-mannose and two N-acetyl-beta-D-glucosamine residues all linked in sequence (1->4), to the mannosyl residue of which are linked linked (1->3) and (1->6) two N-acetyl-alpha-neuraminyl-(2->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->2)-alpha-D-mannosyl linear octasaccharide units. It is an amino oligosaccharide and a glucosamine oligosaccharide.

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

SMILES: CC(=O)NC1C(O)OC(CO)C(OC2OC(CO)C(OC3OC(COC4OC(CO)C(O)C(O)C4OC4OC(CO)C(OC5OC(CO)C(O)C(OC6OC(CO)C(OC7OC(CO)C(O)C(OC8OC(CO)C(OC9OC(CO)C(O)C(OC%10(C(=O)O)CC(O)C(NC(C)=O)C(C(O)C(O)CO)O%10)C9O)C(O)C8NC(C)=O)C7O)C(O)C6NC(C)=O)C5O)C(O)C4NC(C)=O)C(O)C(OC4OC(CO)C(O)C(O)C4OC4OC(CO)C(OC5OC(CO)C(O)C(OC6OC(CO)C(OC7OC(CO)C(O)C(OC8OC(CO)C(OC9OC(CO)C(O)C(OC%10(C(=O)O)CC(O)C(NC(C)=O)C(C(O)C(O)CO)O%10)C9O)C(O)C8NC(C)=O)C7O)C(O)C6NC(C)=O)C5O)C(O)C4NC(C)=O)C3O)C(O)C2NC(C)=O)C1O