Using CN1Cc2ccccc2[C@H]2c3cccc4c3[C@H](CN4)C[C@@H]21 to produce CN1Cc2ccccc2[C@H]2c3cccc4[nH]cc(c34)C[C@@H]21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.