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. O=S(=O)(NCCN1CC2CN(CCc3ccccc3)CC(C1)O2)c1ccc(F)cc1
b. O=C1N(CCN2CCC(C(F)(F)F)CC2)CCN1c1cccc(OC(F)(F)F)c1
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-[3-(trifluoromethoxy)phenyl]-3-[2-[4-(trifluoromethyl)piperidin-1-yl]ethyl]imidazolidin-2-one