Using CCO, O=C(O)COCC(=O)N1CCC(C(c2ccccc2)c2ccccc2)CC1 to produce CCOC(=O)COCC(=O)N1CCC(C(c2ccccc2)c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.