Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a 5.149\% 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] COC(=O)CCC(=O)OC1(C)C(=O)C=C2C=C(C3CC3)N(CCCCO)C=C2C1=O
[b] O=c1[nH]c(CSc2nnnn2-c2ccccc2)nc2ccccc12
Answer: b. O=c1[nH]c(CSc2nnnn2-c2ccccc2)nc2ccccc12
{#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#}
O=c1[nH]c(CSc2nnnn2-c2ccccc2)nc2ccccc12
O=c1[nH]c(CSc2nnnn2-c2ccccc2)nc2ccccc12
2-[(1-phenyltetrazol-5-yl)sulfanylmethyl]-3H-quinazolin-4-one