Task: Answer the multiple-choice question.
Query: Which compound exhibits a 2.768\% 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] COc1cccc(NC(=O)COc2nc3ccccc3nc2C)c1
[b] Cn1cccc1C(=O)NC(=O)COC(=O)c1cc([N+](=O)[O-])ccc1Cl
[c] Cc1ccc(C)c(N2CCN(S(=O)(=O)c3ccc4c(c3)NC(=O)CS4)CC2)c1
[d] CS(=O)(=O)N(CC(=O)NCc1ccc2c(c1)OCO2)Cc1ccc(Cl)cc1
Answer: b. Cn1cccc1C(=O)NC(=O)COC(=O)c1cc([N+](=O)[O-])ccc1Cl
{#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#}
Cn1cccc1C(=O)NC(=O)COC(=O)c1cc([N+](=O)[O-])ccc1Cl
Cn1cccc1C(=O)NC(=O)COC(=O)c1cc([N+](=O)[O-])ccc1Cl
[2-[(1-methylpyrrole-2-carbonyl)amino]-2-oxoethyl] 2-chloro-5-nitrobenzoate