Task: Answer the multiple-choice question.
Question: Which compound exhibits a 18.718\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
(a) Fc1ccc(NC(=S)Nc2ccccc2OC(F)F)cc1Cl
(b) CN(c1ccc(F)cc1)S(=O)(=O)c1ccc(Cl)c(C(=O)NC2(C)CCS(=O)(=O)C2)c1
(c) O=C(O)c1ccc(Oc2cc(Oc3ccc(C(=O)O)cc3)cc([N+](=O)[O-])c2)cc1
(d) CCOc1ccc(/C=N/NC(=O)CC(=O)Nc2ccc(Cl)c(Cl)c2)cc1
Answer: a. Fc1ccc(NC(=S)Nc2ccccc2OC(F)F)cc1Cl
{#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#}
Fc1ccc(NC(=S)Nc2ccccc2OC(F)F)cc1Cl
Fc1ccc(NC(=S)Nc2ccccc2OC(F)F)cc1Cl
1-(3-chloro-4-fluorophenyl)-3-[2-(difluoromethoxy)phenyl]thiourea