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 additional words.
Options:
a. CCOC(=O)N1CCN(C(=O)C2(c3ccccc3)CCN(c3cc(N)ccn3)CC2)CC1
b. N#Cc1ccc(S(=O)(=O)NCCN2CC3CN(CCCOc4ccccc4F)CC(C2)O3)cc1
Answer: a
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}
ethyl 4-[1-(4-aminopyridin-2-yl)-4-phenylpiperidine-4-carbonyl]piperazine-1-carboxylate