Q: What is the molecular formula of this compound, including any salt that it may have?
 The Chemical has the SMILES CCCCCCCCC=CCCCCCCC(O)C(=O)O.
Result: C18H34O3
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
CCCCCCCCC=CCCCCCCC(O)C(=O)O
CCCCCCCCC=CCCCCCCC(O)C(=O)O
2-hydroxyoctadec-9-enoicacid
What is the molecular formula of this compound, including any salt that it may have?