Using O=S1(=O)CCN(C2CNC2)CC1, Cn1c(C=O)nc2c(N3CCOCC3)nc(Cl)nc21 to produce Cn1c(CN2CC(N3CCS(=O)(=O)CC3)C2)nc2c(N3CCOCC3)nc(Cl)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.