Using CC(C)(C)OC(=O)N1CCNCC1, O=Cc1ccc2c(c1)NC(=O)CO2 to produce CC(C)(C)OC(=O)N1CCN(Cc2ccc3c(c2)NC(=O)CO3)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.