Task: Please answer the multiple choice question.
Question: Which molecules are not 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=C(NCCN1CCNCC1)Nc1ncccc1OCc1ccccc1
b COc1cc2nccc(CCC34CCC(NCc5ccc6c(n5)NC(=O)CO6)(CC3)CO4)c2nc1C#N
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-(3-phenylmethoxypyridin-2-yl)-3-(2-piperazin-1-ylethyl)urea