Problem statement: Answer the multiple choice question.
Query: Which drug has a 2.728\% human ether-à-go-go related gene (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: COc1cc2oc3cc(C)oc(=O)c3c2cc1OC
b: O=C(COc1ccccc1Cl)Nc1nc(-c2cccs2)cs1
c: CN(C)C(=O)N1CCC(C(=O)NCc2cccs2)CC1
d: COc1ccc(-c2nc(C#N)c(NCC3CCCO3)o2)cc1OC
Answer: a. COc1cc2oc3cc(C)oc(=O)c3c2cc1OC
{#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#}
7,8-dimethoxy-3-methylpyrano[4,3-b][1]benzofuran-1-one