Task: Answer the multiple choice question.
Question: Which compound exhibits a 12.989\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] CCNC(=S)N/N=C1\C(=O)c2cccc3cccc1c23
[b] COc1ccc(S(=O)(=O)NNC(=O)c2csc(-n3nc(C)cc3C(F)(F)F)n2)cc1
[c] NC(=O)c1ccc(Nc2ccc3nonc3c2[N+](=O)[O-])cc1
[d] Cc1nc(SCC(=O)Nc2cc(Cl)ccc2[N+](=O)[O-])nc(C)c1C
Answer: a. CCNC(=S)N/N=C1\C(=O)c2cccc3cccc1c23
{#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#}
CCNC(=S)N/N=C1\C(=O)c2cccc3cccc1c23
CCNC(=S)N/N=C1\C(=O)c2cccc3cccc1c23
1-ethyl-3-[(Z)-(2-oxoacenaphthylen-1-ylidene)amino]thiourea