Using O=C(Cc1ccc(OCc2ccc3ccccc3n2)cc1)OCC(=O)c1cccnc1 to produce O=C1OCC(c2cccnc2)=C1c1ccc(OCc2ccc3ccccc3n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.