Task: Answer the multiple-choice question.
Query: Which compound exhibits a 6.720\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
(a) COC(=O)c1cc(=O)n2c(-c3ccccc3)csc2n1
(b) Clc1ccc(-c2nc3ncccn3c2Cl)cc1
(c) c1ccc(CN2CCN(c3nc(-c4ccccc4)nc(-n4ccnc4)n3)CC2)cc1
(d) COc1ccc(C2=NN3C(C2)c2ccccc2OC32C(=O)N(C)c3ccccc32)cc1
(e) COc1ccc(C2C(C(=O)NCCN(C)C)c3ccccc3C(=O)N2C)cc1OC
Answer: b. Clc1ccc(-c2nc3ncccn3c2Cl)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#}
3-chloro-2-(4-chlorophenyl)imidazo[1,2-a]pyrimidine