Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a -4.282\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) O=C(c1ccccc1)c1coc2ccc(O)c(Cl)c12
(b) COc1ccccc1NC(=O)C(C)NS(=O)(=O)c1ccc(Cl)cc1
(c) CC(C)CN(C(=O)CN1CCCCCC1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
(d) CC(C)CCNc1nc2c(c(=O)[nH]c(=O)n2C)n1CC(O)COC(C)C
Answer: a. O=C(c1ccccc1)c1coc2ccc(O)c(Cl)c12
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=C(c1ccccc1)c1coc2ccc(O)c(Cl)c12
O=C(c1ccccc1)c1coc2ccc(O)c(Cl)c12
(4-chloro-5-hydroxy-1-benzofuran-3-yl)-phenylmethanone