Problem statement: Answer the MCQ question.
Query: Which drug exhibits a -65.186\% 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 CCCN1C(=O)/C(=C/c2nc3ccccc3c(=O)[nH]2)c2ccccc21
b Cc1sc2nc(CN3CCCC3)nc(N3CCN(S(=O)(=O)c4cccs4)CC3)c2c1C
c CS(=O)(=O)N(CC(=O)Nc1ccccc1Sc1ccccc1)c1cccc(Br)c1
d O=C(NCCN1CCOCC1)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
Answer: b. Cc1sc2nc(CN3CCCC3)nc(N3CCN(S(=O)(=O)c4cccs4)CC3)c2c1C
{#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#}
Cc1sc2nc(CN3CCCC3)nc(N3CCN(S(=O)(=O)c4cccs4)CC3)c2c1C
Cc1sc2nc(CN3CCCC3)nc(N3CCN(S(=O)(=O)c4cccs4)CC3)c2c1C
5,6-dimethyl-2-(pyrrolidin-1-ylmethyl)-4-(4-thiophen-2-ylsulfonylpiperazin-1-yl)thieno[2,3-d]pyrimidine