Task: Please create a description for a molecule.
SMILES: CC1=C(CCC(=O)O)C2=N[C@@]1(C)CC1=N/C(=C(/C)C3=N[C@@](C)([C@@H]4N=C(C2C)[C@](C)(CCC(=O)O)[C@H]4CC(=O)O)[C@@](C)(CC(=O)O)[C@@H]3CCC(=O)O)[C@@](C)(CC(=O)O)[C@@H]1CCC(=O)O
Constraint: Answer the question with full sentences.
Result: The molecule is the intermediate in the biosynthesis of vitamin B12 from uroporphyrinogen III in which eight methyl groups have been introduced into the tetrapyrrole framework, together with ring contraction and decarboxylation. It is a conjugate acid of a precorrin-8X(7-).
Task: Please create a {#text |!}description for a molecule{# based on its representation|!}.
{#Molecule |!}{SMILES__description}: {SMILES#}
Constraint: Answer the question with {#full|complete!} sentences.
Result: {description#}
CC1=C(CCC(=O)O)C2=N[C@@]1(C)CC1=N/C(=C(/C)C3=N[C@@](C)([C@@H]4N=C(C2C)[C@](C)(CCC(=O)O)[C@H]4CC(=O)O)[C@@](C)(CC(=O)O)[C@@H]3CCC(=O)O)[C@@](C)(CC(=O)O)[C@@H]1CCC(=O)O
3-[(1R,2S,3S,5Z,7S,8S,11S,17R,18R,19R)-3,13,17-tris(2-carboxyethyl)-2,7,18-tris(carboxymethyl)-1,2,5,7,11,12,15,17-octamethyl-3,8,10,15,18,19-hexahydrocorrin-8-yl]propanoic acid
The molecule is the intermediate in the biosynthesis of vitamin B12 from uroporphyrinogen III in which eight methyl groups have been introduced into the tetrapyrrole framework, together with ring contraction and decarboxylation. It is a conjugate acid of a precorrin-8X(7-).