Using CC(C)(C)OC(=O)NC1CCN(CC2Cn3c(=O)ccc4nccc2c43)CC1 to produce NC1CCN(CC2Cn3c(=O)ccc4nccc2c43)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.