Problem statement: Answer the multiple-choice question.
Query: Which drug has a 20.081\% 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=C(NCCO)Nc1ccc(Cl)cc1
[b] Cc1ccc2cc(CN(Cc3ccc4c(c3)OCO4)Cc3nnnn3Cc3ccco3)c(=O)[nH]c2c1C
Answer: a. O=C(NCCO)Nc1ccc(Cl)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#}
O=C(NCCO)Nc1ccc(Cl)cc1
O=C(NCCO)Nc1ccc(Cl)cc1
[O][=C][Branch1][Branch1][N][C][C][O][N][C][=C][C][=C][Branch1][C][Cl][C][=C][Ring1][#Branch1]
1-(4-chlorophenyl)-3-(2-hydroxyethyl)urea