Task: Answer the multiple-choice question.
Query: Which compound exhibits a -12.818\% 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 other words.
Options:
[a] COc1ccc2c(=O)c3c(=O)n(Cc4ccco4)c(-c4ccco4)nc3oc2c1
[b] O=C(NC(=O)c1ccccc1)OCC1CCCN2CCCCC12
[c] Cc1nc(SCC(=O)NCCc2ccccc2)nc(C)c1C
[d] Cn1ncc2nc[nH]c(=O)c21
Answer: a. COc1ccc2c(=O)c3c(=O)n(Cc4ccco4)c(-c4ccco4)nc3oc2c1
{#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#}
COc1ccc2c(=O)c3c(=O)n(Cc4ccco4)c(-c4ccco4)nc3oc2c1
COc1ccc2c(=O)c3c(=O)n(Cc4ccco4)c(-c4ccco4)nc3oc2c1
2-(furan-2-yl)-3-(furan-2-ylmethyl)-8-methoxychromeno[2,3-d]pyrimidine-4,5-dione