Using CCOC(=O)C1=C(NC(=O)CCCCN2CCN(c3ccc4ccccc4n3)CC2)CCCC1 to produce O=C(CCCCN1CCN(c2ccc3ccccc3n2)CC1)NC1=C(C(=O)O)CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.