Task: Answer the multiple choice question.
Query: Which compound exhibits a 21.465\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a.) Cc1ccc(S(=O)(=O)Cn2nnnc2C(CC(C)C)N2CCN(c3ccccc3)CC2)cc1
b.) CCOc1cccc(/C=N/NC(=O)c2cc(C3CC3)[nH]n2)c1O
c.) Cc1ccnc(-n2c(C)cc(/C=C3\C(=O)NC(=S)N(C)C3=O)c2C)c1
Answer: a. Cc1ccc(S(=O)(=O)Cn2nnnc2C(CC(C)C)N2CCN(c3ccccc3)CC2)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#}
1-[3-methyl-1-[1-[(4-methylphenyl)sulfonylmethyl]tetrazol-5-yl]butyl]-4-phenylpiperazine