Problem statement: Answer the MCQ question.
Query: Which compound exhibits a 2.263\% 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) O=c1c([N+](=O)[O-])c(N2CCCCCC2)c2ccccc2n1-c1ccccc1
(b) O=C(Nc1cccnc1Cl)C1c2ccccc2Oc2ccccc21
(c) COCCNCC(=O)Nc1ccccc1Sc1ccccc1.O=C(O)C(=O)O
(d) CSc1ccccc1OCc1cc(C(=O)NCCC2CCCCO2)no1
Answer: b. O=C(Nc1cccnc1Cl)C1c2ccccc2Oc2ccccc21
{#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(Nc1cccnc1Cl)C1c2ccccc2Oc2ccccc21
O=C(Nc1cccnc1Cl)C1c2ccccc2Oc2ccccc21
N-(2-chloropyridin-3-yl)-9H-xanthene-9-carboxamide