Using CCCCN1C(=O)NC(=Cc2cc(OC)c(OC)cc2OC)C1=O to produce CCCCN1C(=O)NC(Cc2cc(OC)c(OC)cc2OC)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.