Using CC(=O)N1CCN(c2cc(N3CCOC3=O)ccc2C(=O)N2CCN(c3ncc(C)cc3C)CC2)C1=O to produce Cc1cnc(N2CCN(C(=O)c3ccc(N4CCOC4=O)cc3N3CCNC3=O)CC2)c(C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.