Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a. CCCCc1ccc(O)cc1O
b. CC(Oc1ccc(Oc2ccc(Cl)cc2)cc1)C(=O)O
c. CCC(=O)c1ccc2c(c1)N(CCCN(C)C)c1ccccc1S2
d. Cc1cccc(CN(C)N=O)c1
Answer: b
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}