Using OCCN1CCOCC1, O=C(O)CC1OC(=C2C(=O)Nc3ccccc32)c2ccccc21 to produce O=C(CC1OC(=C2C(=O)Nc3ccccc32)c2ccccc21)OCCN1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.