Using NN, CCOC(=O)c1c(C=O)nc(N2CCOCC2)nc1Nc1ccc(CN2CCN(C(=O)OC(C)(C)C)CC2)cc1 to produce O=c1[nH]ncc2nc(N3CCOCC3)nc(Nc3ccc(CN4CCNCC4)cc3)c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.