Task: Answer the multiple-choice question.
Question: Which drug exhibits a 1.591\% 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 O=C1CCN(CCCc2ccccc2)CCN1[C@H](CO)c1ccccc1
b CC(=O)c1c(COC(=O)c2ccncc2)nc2ccccc2[n+]1[O-]
Answer: a. O=C1CCN(CCCc2ccccc2)CCN1[C@H](CO)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#}
O=C1CCN(CCCc2ccccc2)CCN1[C@H](CO)c1ccccc1
O=C1CCN(CCCc2ccccc2)CCN1[C@H](CO)c1ccccc1
4-[(1S)-2-hydroxy-1-phenylethyl]-1-(3-phenylpropyl)-1,4-diazepan-5-one