Task: Answer the multiple-choice question.
Query: Which drug exhibits a 0.237\% 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. O=C1CN(C(=O)COC(=O)C2=COCCO2)c2ccccc2N1
b. CC(=O)OC(C)(C)/C=C/C(=O)C(C)(O)C1[C@H](O)C[C@@]2(C)C3CC=C4C(CC[C@@H](O)C4(C)C)[C@]3(CO)C(=O)C[C@]12C
c. COc1cccc(NC(=O)CN(C)C(=O)/C=C/c2cc(OC)ccc2OC)c1
d. O=C(OCCOc1cccc(Cl)c1)c1cc(S(=O)(=O)N2CCOCC2)ccc1F
Answer: a. O=C1CN(C(=O)COC(=O)C2=COCCO2)c2ccccc2N1
{#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=C1CN(C(=O)COC(=O)C2=COCCO2)c2ccccc2N1
O=C1CN(C(=O)COC(=O)C2=COCCO2)c2ccccc2N1
[2-oxo-2-(3-oxo-2,4-dihydroquinoxalin-1-yl)ethyl] 2,3-dihydro-1,4-dioxine-5-carboxylate