Using CCOC(=O)CC1CCc2cc(NC(=O)Cc3ccc4nc(Nc5ccccc5C)oc4c3)ccc21 to produce Cc1ccccc1Nc1nc2ccc(CC(=O)Nc3ccc4c(c3)CCC4CC(=O)O)cc2o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.