Task: Answer the multiple choice question.
Question: Which drug exhibits a 18.784\% 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) O=C(NC1CCS(=O)(=O)C1)NP(=S)(Oc1ccccc1)Oc1ccccc1
(b) Clc1ccc2nc(C3CCN(Cc4ccccc4)CC3)[nH]c2c1
(c) Cc1cc(N2CC(C(=O)O)CC2=O)ccc1Br
Answer: a. O=C(NC1CCS(=O)(=O)C1)NP(=S)(Oc1ccccc1)Oc1ccccc1
{#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(NC1CCS(=O)(=O)C1)NP(=S)(Oc1ccccc1)Oc1ccccc1
O=C(NC1CCS(=O)(=O)C1)NP(=S)(Oc1ccccc1)Oc1ccccc1
1-(1,1-dioxothiolan-3-yl)-3-diphenoxyphosphinothioylurea