Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a.) COc1cc2c3c(c1OC)-c1ccccc1CC3N(C)CC2
b.) CCC1Cc2cc(CC(=O)O)ccc2O1
c.) CC(O)CN(CC(C)O)CC(C)O
d.) Clc1ccc(SN=Nc2cc(Cl)c(Cl)cc2Cl)cc1
Answer: c
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}