Task: Answer the multiple choice question.
Question: Which compound has a 21.573\% 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 additional words.
Options:
a. O=c1c(NCCc2ccccc2)c(-c2ccccc2)c1=O
b. CCO[C@H]1OC(C(=O)N2CCN(Cc3ccccc3)CC2)=C[C@@H](c2coc3ccccc3c2=O)[C@@H]1CCCO
c. O=C(O)CCc1nn2c3ccccc3n(CC(=O)c3cccs3)c2nc1=O
d. Cc1cc(C(=O)N2CCC(C(F)(F)F)n3nccc32)on1
Answer: a. O=c1c(NCCc2ccccc2)c(-c2ccccc2)c1=O
{#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=c1c(NCCc2ccccc2)c(-c2ccccc2)c1=O
O=c1c(NCCc2ccccc2)c(-c2ccccc2)c1=O
3-phenyl-4-(2-phenylethylamino)cyclobut-3-ene-1,2-dione