Task: Answer the multiple-choice question.
Query: Which drug exhibits a 20.896\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: COc1ccc(N(CC(=O)NCCSCc2ccco2)S(=O)(=O)c2ccccc2)cc1
b: Cc1c(C(=O)O)sc2nc(/C=C/c3cccc(F)c3)[nH]c(=O)c12
c: CCO[C@@H]1OC(C(=O)O)=C[C@H](c2coc3ccccc3c2=O)[C@H]1CCCO
d: C=CCNC(=O)NC(=O)COC(=O)/C=C/c1cccc([N+](=O)[O-])c1
Answer: c. CCO[C@@H]1OC(C(=O)O)=C[C@H](c2coc3ccccc3c2=O)[C@H]1CCCO
{#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#}
CCO[C@@H]1OC(C(=O)O)=C[C@H](c2coc3ccccc3c2=O)[C@H]1CCCO
CCO[C@@H]1OC(C(=O)O)=C[C@H](c2coc3ccccc3c2=O)[C@H]1CCCO
(2R,3R,4S)-2-ethoxy-3-(3-hydroxypropyl)-4-(4-oxochromen-3-yl)-3,4-dihydro-2H-pyran-6-carboxylic acid