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)C(N)c1ccc(C(=O)Nc2cc(-c3cccs3)ccc2N)cc1
b: Cc1cc2ncc(C(=O)N3CCC([C@H](N)Cc4cc(F)c(F)cc4F)CC3)c(C)n2n1
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 2-amino-2-[4-[(2-amino-5-thiophen-2-ylphenyl)carbamoyl]phenyl]acetate