Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a -2.773\% 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 other words.
Options:
a: COc1ccc(NC(C)=O)cc1S(=O)(=O)Nc1cccc(S(=O)(=O)NC2=NCCC2)c1
b: O=C(Nc1ccccc1N1CCOCC1)c1cccs1
c: CCOc1ccc(-c2c[n+]3c(n2-c2ccccc2)CCCCC3)cc1.[Br-]
d: O=C(CN1C(=O)C2(OCCO2)c2ccccc21)c1ccc(Cl)cc1
Answer: d. O=C(CN1C(=O)C2(OCCO2)c2ccccc21)c1ccc(Cl)cc1
{#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(CN1C(=O)C2(OCCO2)c2ccccc21)c1ccc(Cl)cc1
O=C(CN1C(=O)C2(OCCO2)c2ccccc21)c1ccc(Cl)cc1
1'-[2-(4-chlorophenyl)-2-oxoethyl]spiro[1,3-dioxolane-2,3'-indole]-2'-one