Using CC(C)(C)OC(=O)N1CCN(c2ccc(CCC(=O)N3CCOCC3)cc2)CC1 to produce O=C(CCc1ccc(N2CCNCC2)cc1)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.