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 or b without using any other words.
Options:
[a] O=C1COc2ccc(CNC34CCC(CCc5c(F)cnc6ccc(OC[C@H]7C[C@H]7C(=O)O)nc56)(CC3)OC4)nc2N1
[b] CCN(C(=O)Cc1ccc(S(C)(=O)=O)cc1)C1CCN(CC[C@H](c2ccc(S(C)(=O)=O)cc2)c2cc(F)cc(F)c2)CC1
Answer: b
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}
N-[1-[(3R)-3-(3,5-difluorophenyl)-3-(4-methylsulfonylphenyl)propyl]piperidin-4-yl]-N-ethyl-2-(4-methylsulfonylphenyl)acetamide