Task: Answer the multiple-choice question.
Query: Which drug has a 3.993\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
(a) COc1cc2nc(Cl)nc(NCCO)c2cc1OC
(b) COc1cc2c(cc1OC)[C@H](C)N(C(=O)CSc1nc(O)c(C(C)C)c(=O)[nH]1)CC2
(c) NS(=O)(=O)c1ccc(NC(=O)COc2ccc(Cl)cc2)cc1
Answer: a. COc1cc2nc(Cl)nc(NCCO)c2cc1OC
{#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#}
COc1cc2nc(Cl)nc(NCCO)c2cc1OC
COc1cc2nc(Cl)nc(NCCO)c2cc1OC
2-[(2-chloro-6,7-dimethoxyquinazolin-4-yl)amino]ethanol