Using C=C(C)c1c2c(cc3c1NCCC3)CCN(C(=O)OC(C)(C)C)CC2 to produce CC(C)c1c2c(cc3c1NCCC3)CCN(C(=O)OC(C)(C)C)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.