Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: O=C1COc2ccc(CNC3CCN(CCN4C(=O)COc5ccc(NC(=O)C(F)(F)F)cc54)CC3)nc2N1
b: Brc1cnc2nc(N3CCN4CCC3CC4)oc2c1
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}
6-bromo-2-(1,4-diazabicyclo[3.2.2]nonan-4-yl)-[1,3]oxazolo[4,5-b]pyridine