Task: Answer the multiple choice question.
Question: Which drug has a 1.621\% 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, b, c, or d without using any additional words.
Options:
a O=C(COc1cccc(F)c1)N1c2ccccc2Sc2ccccc21
b S=C1NCN(CCc2ccccc2)CN1
c CC(=O)N/C(N)=N/c1nc2cc(C)ccc2o1
d Cc1onc(-c2ccccc2)c1NC(=O)N(CCC(=O)O)Cc1ccccc1
Answer: b. S=C1NCN(CCc2ccccc2)CN1
{#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#}
S=C1NCN(CCc2ccccc2)CN1
S=C1NCN(CCc2ccccc2)CN1
5-(2-phenylethyl)-1,3,5-triazinane-2-thione