Using O=CC1CCN(C(=O)OCc2ccccc2)CC1, CCOP(=O)(CC(=O)c1ccccc1)OCC to produce O=C(C=CC1CCN(C(=O)OCc2ccccc2)CC1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.