Using COc1ccc2c(=O)ccoc2c1CCN1CCC(n2ccc3ccc(C(N)=O)cc32)CC1 to produce COc1ccc2c(c1CCN1CCC(n3ccc4ccc(C(N)=O)cc43)CC1)OCCC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.