Task: Answer the MCQ question.
Question: Which drug exhibits a 1.880\% 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 additional words.
Options:
(a) O=C1C2CC=C(Cl)CC2C(=O)N1CC1OCCc2ccccc21
(b) CC(C)(c1cc(Br)c(O)c(Br)c1)c1cc(Br)c(O)c(Br)c1
Answer: a. O=C1C2CC=C(Cl)CC2C(=O)N1CC1OCCc2ccccc21
{#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=C1C2CC=C(Cl)CC2C(=O)N1CC1OCCc2ccccc21
O=C1C2CC=C(Cl)CC2C(=O)N1CC1OCCc2ccccc21
5-chloro-2-(3,4-dihydro-1H-isochromen-1-ylmethyl)-3a,4,7,7a-tetrahydroisoindole-1,3-dione