Task: Answer the MCQ question.
Question: Which drug has a 3.555\% 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) COc1cccc(NC(=O)CCC(=O)N2CC(C)Oc3ccc(C)cc32)c1
(b) O=C1CC(N2CCOCC2)C(=O)N1c1cccc(Cl)c1
(c) COCCN1C(=O)C(O)=C(C(C)=O)C1c1ccc(F)cc1
(d) CCOC(=O)/C(C#N)=C(\O)c1ccc(NC(=O)c2ccc([N+](=O)[O-])cc2)cc1
Answer: b. O=C1CC(N2CCOCC2)C(=O)N1c1cccc(Cl)c1
{#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=C1CC(N2CCOCC2)C(=O)N1c1cccc(Cl)c1
O=C1CC(N2CCOCC2)C(=O)N1c1cccc(Cl)c1
1-(3-chlorophenyl)-3-morpholin-4-ylpyrrolidine-2,5-dione