Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker (<10uM)?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CN(C)CCC(NC(=O)C1(N)CCN(c2ncnc3[nH]ccc23)CC1)c1ccc(Cl)cc1
b: CCN(C(=O)Cc1ccc(S(C)(=O)=O)cc1)C1CCN(CC[C@@H](c2cccc(F)c2)C2CCN(S(C)(=O)=O)CC2)CC1
c: O=C(O)c1cnc2c(N3CCN(CCc4ccc(OCCCN5CCCCCC5)cc4)CC3)cccc2c1
d: CCC[C@@H]1NC(c2cc(C#N)ccn2)=NC1(c1ccc(F)cc1)c1ccc(F)cc1
Answer: d
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
2-[(4S)-5,5-bis(4-fluorophenyl)-4-propyl-1,4-dihydroimidazol-2-yl]pyridine-4-carbonitrile