Task: Answer the multiple choice question.
Question: Which drug exhibits a -0.224\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any other words.
Options:
a: Cc1cccc2cc(/C=N/NC(=O)CN3CCOCC3)c(Cl)nc12
b: Nc1nc(Cl)cc(N2CCOCC2)n1
c: CCNC(=S)N/N=C/c1cccs1
d: COc1ccc(-n2c(C)cc(C(=O)CCl)c2C)cc1
e: O=C1C2C3C=CC(CC3)C2C(=O)N1c1ccccc1[N+](=O)[O-]
Answer: c. CCNC(=S)N/N=C/c1cccs1
{#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#}
CCNC(=S)N/N=C/c1cccs1
CCNC(=S)N/N=C/c1cccs1
1-ethyl-3-[(E)-thiophen-2-ylmethylideneamino]thiourea