Task: Answer the MCQ question.
Question: Which compound exhibits a 13.268\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) COc1cc(CNCCc2ccc(S(N)(=O)=O)cc2)ccc1OCC(=O)N1CCCCC1.Cl
(b) CCCCc1cc(=O)oc2c3c(cc(OCC(=O)N4CCC[C@H]4C(=O)O)c12)OC(C)(C)CC3
Answer: b. CCCCc1cc(=O)oc2c3c(cc(OCC(=O)N4CCC[C@H]4C(=O)O)c12)OC(C)(C)CC3
{#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#}
CCCCc1cc(=O)oc2c3c(cc(OCC(=O)N4CCC[C@H]4C(=O)O)c12)OC(C)(C)CC3
CCCCc1cc(=O)oc2c3c(cc(OCC(=O)N4CCC[C@H]4C(=O)O)c12)OC(C)(C)CC3
(2S)-1-[2-[(4-butyl-8,8-dimethyl-2-oxo-9,10-dihydropyrano[2,3-h]chromen-5-yl)oxy]acetyl]pyrrolidine-2-carboxylic acid