Task: Answer the multiple-choice question.
Question: Which drug exhibits a 0.149\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
(a) Cc1ccc(S(=O)(=O)CCC(=O)OCC(=O)N2c3ccccc3CC2C)cc1
(b) O=CNC1CCCc2c1[nH]c1ccc(Cl)cc21
(c) CCCOC(=O)Cc1c(O)c2ccccc2[nH]c1=O
(d) C[C@@H]1CC=C[C@H]2[C@H]1C(=O)N(Cc1ccccc1)[C@H]2c1ccc(Br)cc1F
Answer: b. O=CNC1CCCc2c1[nH]c1ccc(Cl)cc21
{#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=CNC1CCCc2c1[nH]c1ccc(Cl)cc21
O=CNC1CCCc2c1[nH]c1ccc(Cl)cc21
N-(6-chloro-2,3,4,9-tetrahydro-1H-carbazol-1-yl)formamide