Task: Answer the multiple-choice question.
Question: Which compound has a 0.551\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a S=c1[nH]cc(-c2ccc(Cl)cc2)n1-c1ccccc1
b CCOc1ccccc1C(=O)Nc1cc(=O)n(C)c(=O)n1C
c O=C(CN1c2ccccc2Sc2ccccc21)N/N=C/c1ccccc1
d CCC(C(=O)NC1CC1)n1nc(C)c2c(C)n(-c3ccc(C)cc3)nc2c1=O
Answer: a. S=c1[nH]cc(-c2ccc(Cl)cc2)n1-c1ccccc1
{#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=c1[nH]cc(-c2ccc(Cl)cc2)n1-c1ccccc1
S=c1[nH]cc(-c2ccc(Cl)cc2)n1-c1ccccc1
4-(4-chlorophenyl)-3-phenyl-1H-imidazole-2-thione