Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) O=C1CN(CCc2ccc(F)cc2)CCN1[C@H]1CCc2cc(CNCC(F)(F)F)ccc2C1
(b) CCOc1cc2nccc(Oc3cnc(CC(=O)Nc4[nH]nc(CC)c4C)c(OC)c3)c2cc1OC
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-[2-(4-fluorophenyl)ethyl]-1-[(2S)-6-[(2,2,2-trifluoroethylamino)methyl]-1,2,3,4-tetrahydronaphthalen-2-yl]piperazin-2-one