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=C(O)c1cc(CN2CCN(c3ccc(Br)cc3)CC2)c2ccccn2c1=O
b) O=C1COc2ccc(CNC3CCN(CCN4C(=O)COc5ccc(-n6cnnn6)cc54)CC3)nc2N1
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}
1-[[4-(4-bromophenyl)piperazin-1-yl]methyl]-4-oxoquinolizine-3-carboxylic acid