Task: Answer the MCQ question.
Query: Which drug has a 1.618\% 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 CN1CCN(c2nc(-c3ccccc3)nc3c2oc2ccccc23)CC1
b C/C=C/C(=O)N1CC2(CC(c3cccc(NC(=O)CC(c4ccccc4)c4ccccc4)c3)=NO2)C[C@H]1C(N)=O
c C/C(=N\O)C(C)Oc1ccc(Cl)cc1
d Cc1cc(NC(=O)CSc2nnc(COc3cccc(C)c3C)n2Cc2ccco2)no1
Answer: a. CN1CCN(c2nc(-c3ccccc3)nc3c2oc2ccccc23)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#}
CN1CCN(c2nc(-c3ccccc3)nc3c2oc2ccccc23)CC1
CN1CCN(c2nc(-c3ccccc3)nc3c2oc2ccccc23)CC1
4-(4-methylpiperazin-1-yl)-2-phenyl-[1]benzofuro[3,2-d]pyrimidine