Task: Answer the multiple choice question.
Query: What is the human ether-à-go-go related gene (hERG) inhibition at 1uM of a drug with the SMILES S=C1NCCOCCNC(=S)NCCOCCOCCN1?
Constraint: You must return none, one or more options from a, b, c, or d without using any additional words.
Options:
a: 18.903
b: 2.981
c: 7.873
d: 3.231
Answer: a. 18.903\%.
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: What is the {herg_central_at_1uM__names__noun} of a {#compound|drug!} with the {SMILES__description} {SMILES#}?
Constraint: You must return none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{herg_central_at_1uM%SMILES%}
Answer: {%multiple_choice_result}. {herg_central_at_1uM#}{herg_central_at_1uM__units}.
1,9,17-trioxa-4,6,12,14-tetrazacyclononadecane-5,13-dithione