Problem statement: Answer the MCQ question.
Query: Which compound exhibits a -27.450\% 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 other words.
Options:
a. O=c1c2ccccc2nc2ccc(NCc3ccco3)nn12
b. C=CCOc1ccc(/C(O)=C2/C(=O)C(=O)N(CCCn3ccnc3)C2c2cccs2)cc1
c. CCOC(=O)c1cccc(NS(=O)(=O)c2c(C(=O)N3CCCCCC3)c(C)n(C)c2C)c1
d. COC(=O)C1=C(c2ccc(OC)c(OC)c2)C[C@@H]2CC[C@H]1N2C(=O)NCCOc1ccccc1Cl
Answer: a. O=c1c2ccccc2nc2ccc(NCc3ccco3)nn12
{#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=c1c2ccccc2nc2ccc(NCc3ccco3)nn12
O=c1c2ccccc2nc2ccc(NCc3ccco3)nn12
2-(furan-2-ylmethylamino)pyridazino[6,1-b]quinazolin-10-one