Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a CCOC(=O)c1ccc2[nH]c(C(F)(F)F)nc2c1
b CCCCOC(=O)CC(SP(=O)(OC)OC)C(=O)OCCCC
c FC(F)(F)c1nc2c(Br)c(Cl)c(Cl)c(Cl)c2[nH]1
d CCOP(=S)(OCC)SCS(=O)CC
Answer: d
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}