Task: Answer the multiple-choice question.
Question: Which drug exhibits a 15.131\% 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 other words.
Options:
a: COc1ccccc1Cn1cnc2cccnc21
b: COc1cc(/C=N/NC(=O)c2csc3c2CCCC3)cc(OC)c1O
c: Cc1ccc(NC(=O)COc2ccccc2C(N)=O)cc1S(=O)(=O)N1CCCCCC1
d: Cc1c(/C(O)=C2/C(=O)C(=O)N(CCN3CCOCC3)C2c2cccnc2)cnn1-c1ccccc1
Answer: a. COc1ccccc1Cn1cnc2cccnc21
{#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#}
COc1ccccc1Cn1cnc2cccnc21
COc1ccccc1Cn1cnc2cccnc21
3-[(2-methoxyphenyl)methyl]imidazo[4,5-b]pyridine