Using CC(=O)N(C)n1c(N2CCCN(C(=O)OC(C)(C)C)CC2)nc2ccccc21 to produce CC(=O)N(C)n1c(N2CCCNCC2)nc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.