Using CC(C)(C)OC(=O)N1CC2(CCCC2)N(Cc2ccccc2)CC1(C)C to produce CC(C)(C)OC(=O)N1CC2(CCCC2)NCC1(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.