Using COc1cc2c(nc1OC)c(-c1cc3c(CNC4CN(C(=O)OC(C)(C)C)C4)ccnc3[nH]1)cn2C to produce COc1cc2c(nc1OC)c(-c1cc3c(CNC4CNC4)ccnc3[nH]1)cn2C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.