Task: Answer the MCQ question.
Question: Which compound exhibits a 1.880\% 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 additional words.
Options:
a: Cl.OC1(CN2CCOCC2)C2CC3CC(C2)CC1C3
b: O=C(CNC(=S)N(Cc1ccccc1)Cc1cccnc1)NCCN1CCOCC1
c: O=c1ccccn1CCOc1ccccc1Cl
d: Cc1cc(C)n(CC(=O)N2CCCC(N3CCN(c4cccc(C(F)(F)F)c4)CC3)C2)n1
e: Cc1ccc(Nc2nc(N)nc(CSc3nnc(-c4ccncc4)o3)n2)cc1
Answer: c. O=c1ccccn1CCOc1ccccc1Cl
{#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#}
O=c1ccccn1CCOc1ccccc1Cl
O=c1ccccn1CCOc1ccccc1Cl
1-[2-(2-chlorophenoxy)ethyl]pyridin-2-one