Problem statement: Answer the multiple-choice question.
Question: Which drug has a 3.904\% 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, d, or e without using any other words.
Options:
(a) O=[n+]1c2c(n([O-])c3cc(Br)ccc31)CCC2
(b) CN1CCN(C(=O)/C(=C/c2cccnc2)NC(=O)c2cccc(Br)c2)CC1
(c) Nc1ccc(NC2C[C@@H](C(=O)O)NC2=O)cc1
(d) Cc1ccc(-c2cn(C[C@H]3CC[C@@H]([C@@H]4CC[C@H](Cn5cc(-c6ccc(C)cc6)nn5)O4)O3)nn2)cc1
(e) Cn1c(=O)cc(OCCCC(=O)NCc2ccc3c(c2)OCO3)c2ccccc21
Answer: a. O=[n+]1c2c(n([O-])c3cc(Br)ccc31)CCC2
{#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=[n+]1c2c(n([O-])c3cc(Br)ccc31)CCC2
O=[n+]1c2c(n([O-])c3cc(Br)ccc31)CCC2
6-bromo-4-oxido-2,3-dihydro-1H-cyclopenta[b]quinoxalin-9-ium 9-oxide