Task: Answer the multiple choice question.
Question: Which drug has a 3.346\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) COc1ccccc1NC(=O)Cn1cnc2c(oc3ccccc32)c1=O
(b) O=S1(=O)N=C(N2CCN(Cc3ccc4c(c3)OCO4)CC2)c2ccccc21
(c) CCOc1ccc(C2c3c(oc4cc(C)c(C)cc4c3=O)C(=O)N2CCCN2CCOCC2)cc1
(d) CCC(C)c1ccc(NC(=O)C2CCN(c3ncccn3)CC2)cc1
Answer: a. COc1ccccc1NC(=O)Cn1cnc2c(oc3ccccc32)c1=O
{#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#}
COc1ccccc1NC(=O)Cn1cnc2c(oc3ccccc32)c1=O
COc1ccccc1NC(=O)Cn1cnc2c(oc3ccccc32)c1=O
N-(2-methoxyphenyl)-2-(4-oxo-[1]benzofuro[3,2-d]pyrimidin-3-yl)acetamide