Using COC(=O)CCCc1ccc(OCCNc2cccnc2-c2ccccc2)cc1 to produce O=C(O)CCCc1ccc(OCCNc2cccnc2-c2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.