Task: Answer the multiple-choice question.
Question: Which compound exhibits a 15.639\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
a: CN(C)CCNC(=O)c1cc(Sc2ccc(F)cc2)nc2ccccc12
b: O=C1CC(c2ccccc2)CC(=O)C1=CN1CCCC1
c: CCN(CC)C(=O)C1CC(=O)N(c2ccc(OC)cc2)C1c1ccc(OC)cc1
d: O=C(COc1ccccc1Cl)Nc1ccc(C(=O)c2ccc(C(=O)O)cc2)cc1
e: COc1ccc(COC[C@H](C)[C@H](O)[C@@H](C)[C@H]2OC(=O)[C@@H]2C)cc1
Answer: b. O=C1CC(c2ccccc2)CC(=O)C1=CN1CCCC1
{#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(c2ccccc2)CC(=O)C1=CN1CCCC1
O=C1CC(c2ccccc2)CC(=O)C1=CN1CCCC1
5-phenyl-2-(pyrrolidin-1-ylmethylidene)cyclohexane-1,3-dione