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 other words.
Options:
(a) COc1cc(N2C(=O)N(c3ccc(-c4csc(C(=O)O)c4)cc3)C(=O)C23CCN(Cc2ncccc2C)CC3)ncn1
(b) COc1ccc2ncc(F)c([C@@H](O)CC[C@@H]3CCN(C4CC(c5cc(F)cc(F)c5)C4)C[C@@H]3C(=O)O)c2c1
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}
4-[4-[1-(6-methoxypyrimidin-4-yl)-8-[(3-methylpyridin-2-yl)methyl]-2,4-dioxo-1,3,8-triazaspiro[4.5]decan-3-yl]phenyl]thiophene-2-carboxylic acid