Using COC(=O)c1ccc2oc3c(c(=O)c2c1)CCCC3=Cc1ccccc1 to produce O=C(O)c1ccc2oc3c(c(=O)c2c1)CCCC3=Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.