Task: Answer the multiple-choice question.
Query: Which compound exhibits a 18.475\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
(a) CCNc1c(NC(C)=O)c(=O)oc2ccccc12
(b) CC1CCN(CCNC(=O)C2CCCN(S(=O)(=O)c3cccc4nonc34)C2)CC1
(c) CCOC(=O)c1ccc(N=c2sc(C(=O)OC)cc(=O)n2Cc2ccc3c(c2)OCO3)cc1
Answer: a. CCNc1c(NC(C)=O)c(=O)oc2ccccc12
{#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#}
CCNc1c(NC(C)=O)c(=O)oc2ccccc12
CCNc1c(NC(C)=O)c(=O)oc2ccccc12
N-[4-(ethylamino)-2-oxochromen-3-yl]acetamide