Using CCc1nc2c(cnn2CC)c(NC2CCOCC2)c1CN, O=C(O)C1(C(=O)O)CC1 to produce CCc1nc2c(cnn2CC)c(NC2CCOCC2)c1CNC(=O)C1(C(=O)O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.