Task: Answer the multiple-choice question.
Query: Which drug exhibits a -19.858\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] O=C(Cn1ncc2c(=O)oc3ccccc3c21)N1CCN(c2ccccn2)CC1
[b] CCn1c(SC(C)C(=O)NC2CCCC2)nc2cc(S(N)(=O)=O)ccc21
Answer: a. O=C(Cn1ncc2c(=O)oc3ccccc3c21)N1CCN(c2ccccn2)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#}
O=C(Cn1ncc2c(=O)oc3ccccc3c21)N1CCN(c2ccccn2)CC1
O=C(Cn1ncc2c(=O)oc3ccccc3c21)N1CCN(c2ccccn2)CC1
1-[2-oxo-2-(4-pyridin-2-ylpiperazin-1-yl)ethyl]chromeno[4,3-c]pyrazol-4-one