Using CCOC(=O)CCc1cn(Cc2ccc(OCCc3ccc(CC)cn3)cc2)nc1OCC to produce CCOc1nn(Cc2ccc(OCCc3ccc(CC)cn3)cc2)cc1CCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.