Using COC(=O)CCOc1cccc(CCCn2cc(C(c3ccccc3)c3ccccc3)ccc2=O)c1 to produce O=C(O)CCOc1cccc(CCCn2cc(C(c3ccccc3)c3ccccc3)ccc2=O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.