Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. O=S1(=O)CCN(c2ccc(Nc3ncc4ccn(-c5ccccn5)c4n3)cc2)CC1
b. O=C1OCc2cc(CCN3CCN(C(=O)Cc4ccc(-n5cnnn5)nc4)CC3)ccc21
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}
5-[2-[4-[2-[6-(tetrazol-1-yl)pyridin-3-yl]acetyl]piperazin-1-yl]ethyl]-3H-2-benzofuran-1-one