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] CC1CN(CCO)CCN1c1cc2[nH]c(SC(C)(C)C)nc2cc1Cl
[b] O=S1(=O)CCC(CNc2ccc3ncc(-c4cccc(OC(F)(F)F)c4)n3n2)CC1
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}
2-[4-(2-tert-butylsulfanyl-6-chloranyl-3H-benzimidazol-5-yl)-3-methyl-piperazin-1-yl]ethanol