Task: Answer the MCQ question.
Question: Which compound has a 6.500\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a S=C(NCc1cccnc1)Nc1ccc(Cl)cc1
b Cc1ccc2c(CC(=O)N(CC3CCCO3)c3c(N)n(Cc4ccccc4)c(=O)[nH]c3=O)coc2c1
Answer: a. S=C(NCc1cccnc1)Nc1ccc(Cl)cc1
{#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#}
S=C(NCc1cccnc1)Nc1ccc(Cl)cc1
S=C(NCc1cccnc1)Nc1ccc(Cl)cc1
1-(4-chlorophenyl)-3-(pyridin-3-ylmethyl)thiourea