Problem statement: Answer the multiple-choice question.
Query: Which compound has a 18.378\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a. COC(=O)[C@H](CCSC)NC(=O)NC1CC1
b. CC1OC(OC2C(Oc3c(-c4ccc(O)cc4)oc4cc(O)cc(O)c4c3=O)OC(COC3O[C@@H](C)[C@H](O)[C@@H](O)C3O)C(O)C2O)C(O)C(O)C1O
c. CCn1c(CC(=O)Nc2ccccc2F)nnc1SCC(=O)NC1CCCCC1
d. CN(CC(=O)Nc1ccccc1Cl)C(=O)COC(=O)c1ccc(Cl)cc1[N+](=O)[O-]
Answer: a. COC(=O)[C@H](CCSC)NC(=O)NC1CC1
{#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#}
COC(=O)[C@H](CCSC)NC(=O)NC1CC1
COC(=O)[C@H](CCSC)NC(=O)NC1CC1
methyl (2S)-2-(cyclopropylcarbamoylamino)-4-methylsulfanylbutanoate