Using O=C1NC(O)C(c2ccccc2)C12CCN(Cc1ccccc1)CC2 to produce O=C1NC=C(c2ccccc2)C12CCN(Cc1ccccc1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.