Task: Answer the MCQ question.
Query: Which compound exhibits a 1.979\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any other words.
Options:
a: COc1cc(=O)n(C)c2c(OCC(O)C(C)(C)O)cccc12
b: CN1C(=O)C(O)(CC(=O)c2ccc3c(c2)OCO3)c2ccccc21
c: Cc1cc(C(=O)COc2cccnc2[N+](=O)[O-])c(C)n1Cc1cccs1
d: COc1cc(OC)cc(C(=O)NC(=S)N2C[C@H]3C[C@H](C2)c2cccc(=O)n2C3)c1
e: C=CCOc1cccc(C2/C(=C(/O)c3ccc4c(c3)CC(C)O4)C(=O)C(=O)N2CCN2CCOCC2)c1
Answer: b. CN1C(=O)C(O)(CC(=O)c2ccc3c(c2)OCO3)c2ccccc21
{#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#}
CN1C(=O)C(O)(CC(=O)c2ccc3c(c2)OCO3)c2ccccc21
CN1C(=O)C(O)(CC(=O)c2ccc3c(c2)OCO3)c2ccccc21
3-[2-(1,3-benzodioxol-5-yl)-2-oxoethyl]-3-hydroxy-1-methylindol-2-one