Task: Answer the multiple-choice question.
Question: Which drug exhibits a 20.718\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) COc1ccc(OCCN2CCOCC2)cc1
(b) Cc1ccccc1C(=O)Nc1ccnn1C1CCN(Cc2ccc(CO)o2)CC1
(c) O=C(COc1ccc2ccc(=O)oc2c1)N1CCc2ccccc21
(d) CCNC(=S)N/N=C1\CCCCc2ccccc21
Answer: a. COc1ccc(OCCN2CCOCC2)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#}
COc1ccc(OCCN2CCOCC2)cc1
COc1ccc(OCCN2CCOCC2)cc1
4-[2-(4-methoxyphenoxy)ethyl]morpholine