Using CCOC(=O)C1CCN(CCOc2ccc3[nH]c(-c4cc5ccccc5[nH]c4=O)cc3c2)CC1 to produce O=C(O)C1CCN(CCOc2ccc3[nH]c(-c4cc5ccccc5[nH]c4=O)cc3c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.