Using COC(=O)C[C@@H]1Cc2ccc(OCCCNc3ccccn3)cc2CN(CCc2ccccc2)C1=O to produce O=C(O)C[C@@H]1Cc2ccc(OCCCNc3ccccn3)cc2CN(CCc2ccccc2)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.