Using CCOC(=O)CBr, O=C(C1CCNCC1)N1CCN2C(=O)OC(c3ccccc3)(c3ccccc3)C2C1 to produce CCOC(=O)CN1CCC(C(=O)N2CCN3C(=O)OC(c4ccccc4)(c4ccccc4)C3C2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.