Problem statement: Answer the MCQ question.
Query: What is the hERG inhibition at 1uM of a compound with the SMILES O=C(O)C1CCCC2CN3CCc4c([nH]c5ccccc45)C3C(O)C21?
Constraint: You must return none, one or more options from a or b without using any additional words.
Options:
(a) -1.767
(b) 12.702
Answer: b. 12.702\%.
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: What is the {herg_central_at_1uM__names__noun} of a {#compound|drug!} with the {SMILES__description} {SMILES#}?
Constraint: You must return none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{herg_central_at_1uM%SMILES%}
Answer: {%multiple_choice_result}. {herg_central_at_1uM#}{herg_central_at_1uM__units}.
O=C(O)C1CCCC2CN3CCc4c([nH]c5ccccc45)C3C(O)C21
O=C(O)C1CCCC2CN3CCc4c([nH]c5ccccc45)C3C(O)C21
21-hydroxy-1,3,11,12,14,15,16,17,18,19,20,21-dodecahydroyohimban-19-carboxylic acid