Task: Answer the MCQ question.
Query: Which drug exhibits a 2.851\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a O=C(c1ccccc1Cl)c1c(O)c2ccccc2oc1=O
b O=C(COc1ccccc1Br)N1CCN(c2ccccc2)CC1
Answer: a. O=C(c1ccccc1Cl)c1c(O)c2ccccc2oc1=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#}
O=C(c1ccccc1Cl)c1c(O)c2ccccc2oc1=O
O=C(c1ccccc1Cl)c1c(O)c2ccccc2oc1=O
3-(2-chlorobenzoyl)-4-hydroxychromen-2-one