Problem statement: Answer the MCQ question.
Query: Which compound has a 2.724\% 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, d, or e without using any additional words.
Options:
a. COc1cc2c(cc1O)C[C@H]1NCCc3cc4c(c-2c31)OCO4
b. CCn1nc(C)c([N+](=O)[O-])c1C(=O)NNC(=O)c1ccc(Cl)cc1
c. Cc1ccc2nc(NC(=O)CSCc3ccccc3)sc2c1
d. COc1ccc(S(=O)(=O)N(CCc2ccccc2)CC(=O)NCCCO)cc1
e. Cc1nc(S/C(=C/c2ccc(-c3cc(Cl)ccc3C)o2)C(=O)O)n[nH]1
Answer: b. CCn1nc(C)c([N+](=O)[O-])c1C(=O)NNC(=O)c1ccc(Cl)cc1
{#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#}
CCn1nc(C)c([N+](=O)[O-])c1C(=O)NNC(=O)c1ccc(Cl)cc1
CCn1nc(C)c([N+](=O)[O-])c1C(=O)NNC(=O)c1ccc(Cl)cc1
N'-(4-chlorobenzoyl)-2-ethyl-5-methyl-4-nitropyrazole-3-carbohydrazide