Using O=C(C1CCc2ccccc21)N1CC=C(c2c[nH]c3ccccc23)CC1 to produce C1=C(c2c[nH]c3ccccc23)CCN(CC2CCc3ccccc32)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.