Using CC(C)(C)OC(=O)N1CCCN(c2ccc3ncn(CC(=O)O)c(=O)c3c2)CC1 to produce O=C(O)Cn1cnc2ccc(N3CCNCC3)cc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.