Using CC(C)(C)OC(=O)N1CCC(=O)CC1, NC1CCCc2cccnc21 to produce CC(C)(C)OC(=O)N1CCC(NC2CCCc3cccnc32)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.