Using CCOC(=O)CN(C(=O)CCCc1ccnc2c1CCCN2)C1CC1 to produce O=C(O)CN(C(=O)CCCc1ccnc2c1CCCN2)C1CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.