Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: CN(C)C(=O)[C@H](c1ccc(-c2cccc(-c3nnn[nH]3)c2)cc1)[C@H](N)C(=O)N1CC[C@@H](F)C1
b: O=C(Nc1ccc(O)cc1OC[C@@H](O)CN1CCC2(CC1)Cc1cc(Cl)ccc1O2)NC1CC1
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}
1-[2-[(2S)-3-(5-chlorospiro[3H-1-benzofuran-2,4'-piperidine]-1'-yl)-2-hydroxypropoxy]-4-hydroxyphenyl]-3-cyclopropylurea