Task: Answer the multiple-choice question.
Query: Which drug exhibits a 21.135\% 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 or b without using any additional words.
Options:
a.) CCc1ccc(O)c(CNCCNCc2cc(CC)ccc2O)c1
b.) CCc1nnc(NC(=O)CCC(=O)Nc2ccc(Cl)cc2)s1
Answer: a. CCc1ccc(O)c(CNCCNCc2cc(CC)ccc2O)c1
{#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#}
CCc1ccc(O)c(CNCCNCc2cc(CC)ccc2O)c1
CCc1ccc(O)c(CNCCNCc2cc(CC)ccc2O)c1
4-ethyl-2-[[2-[(5-ethyl-2-hydroxyphenyl)methylamino]ethylamino]methyl]phenol